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histamine

" in MedChemExpress (MCE) Product Catalog:

By Targets:	Histamine Receptor (645) 5-HT Receptor (83) Acyltransferase (2) Adenosine Receptor (3) Adenylate Cyclase (1) Adrenergic Receptor (56) Akt (12) Amino Acid Decarboxylase (2) Amino Acid Derivatives (1) Amyloid-β (12) Antibiotic (4) Antifolate (2) Apelin Receptor (APJ) (1) Apoptosis (42) ATP Synthase (1) Autophagy (16) Bacterial (38) Biochemical Assay Reagents (14) Btk (1) Calcium Channel (18) Casein Kinase (2) Caspase (4) CCR (3) CDK (1) Checkpoint Kinase (Chk) (1) Cholinesterase (ChE) (18) COX (7) CRAC Channel (1) CXCR (6) Cytochrome P450 (17) Dengue Virus (4) Dopamine Receptor (57) Dopamine Transporter (1) Drug Derivative (8) Drug Intermediate (3) Drug Isomer (5) Drug Metabolite (12) Endogenous Metabolite (58) Endothelin Receptor (1) Enterovirus (4) Environmental Pollutants (7) Epigenetic Reader Domain (1) ERK (2) FAK (2) FAP (1) Fc Receptor (FcR) (1) Ferroptosis (1) Filovirus (1) Flavivirus (4) Fluorescent Dye (2) FOXO (2) GABA Receptor (7) Glycosidase (1) GnRH Receptor (1) GPR35 (1) GSK-3 (5) HBV (4) HCV (3) HCV Protease (2) HDAC (1) Histone Methyltransferase (12) HIV (1) iGluR (5) IKK (4) Influenza Virus (11) Integrin (3) Interleukin Related (13) Isotope-Labeled Compounds (88) Itk (2) JNK (4) Keap1-Nrf2 (4) Leukotriene Receptor (9) Lipoxygenase (6) mAChR (27) Macrophage migration inhibitory factor (MIF) (1) Mas-related G-protein-coupled Receptor (MRGPR) (2) MDM-2/p53 (2) mGluR (3) MOFs (1) Monoamine Oxidase (2) mTOR (4) Na+/Ca2+ Exchanger (3) Na+/K+ ATPase (1) nAChR (1) Neurokinin Receptor (1) Neuropeptide Y Receptor (1) Neurotensin Receptor (3) NF-κB (19) NO Synthase (3) Nuclear Hormone Receptor 4A/NR4A (7) Orexin Receptor (OX Receptor) (1) Oxidative Phosphorylation (1) P-glycoprotein (1) P2X Receptor (2) p38 MAPK (19) p62 (4) Parasite (16) PARP (1) PERK (2) PGE synthase (3) Phosphatase (1) Phosphodiesterase (PDE) (11) Phospholipase (1) PI3K (2) PKA (2) PKC (1) Platelet-activating Factor Receptor (PAFR) (3) Potassium Channel (20) Prostaglandin Receptor (9) Protease Activated Receptor (PAR) (1) Proton Pump (1) Pyroptosis (4) Reactive Oxygen Species (ROS) (11) Reference Standards (142) SARS-CoV (14) Ser/Thr Protease (2) Serotonin Transporter (8) Sigma Receptor (10) Sodium Channel (9) STAT (2) Syk (1) Target Protein Ligand-Linker Conjugates (1) Tau Protein (1) TNF Receptor (11) Trace Amine-associated Receptor (TAAR) (1) Transmembrane Glycoprotein (4) Trk Receptor (1) TRP Channel (7) VEGFR (3)
By Research Areas:	Cancer (131) Cardiovascular Disease (57) Endocrinology (227) Infection (69) Inflammation/Immunology (454) Metabolic Disease (89) Neurological Disease (333)
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Oligonucleotides:	Solvents (1)

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Targets Recommended: Histamine Receptor

Cat. No.	Nombre del producto	Target	Áreas de investigación	Chemical Structure

HY-B1204

*Histamine* Maximum Cited Publications 20 Publications Verification Ergamine	Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite	Neurological Disease Inflammation/Immunology Endocrinology Cancer
Histamine is the agonist for histamine receptor and a vasodilator. Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-B0722

Histamine dihydrochloride Maximum Cited Publications 20 Publications Verification	Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite	Neurological Disease Inflammation/Immunology Endocrinology Cancer
Histamine dihydrochloride is the agonist for histamine receptor and a vasodilator. Histamine dihydrochloride is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine dihydrochloride affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine dihydrochloride can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-A0129

Histamine phosphate Maximum Cited Publications 20 Publications Verification histamine diphosphate	Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite	Neurological Disease Inflammation/Immunology Endocrinology Cancer
Histamine phosphate is the agonist for histamine receptor and a vasodilator. Histamine phosphate is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine phosphate affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine phosphate can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-12206

Thioperamide 3 Publications Verification MR-12842	Histamine Receptor	Neurological Disease
Thioperamide (MR-12842) is a potent, orally available, brain penetrant and selective H3 receptor antagonist with a K_i of 4.3 nM for inhibition of [ ³H]histamine release. Thioperamide inhibits [ ³H]histamine synthesis with a K_i of 31 nM .

HY-B1204S

Histamine-α,α,β,β-d4 dihydrochloride Ergamine-α,α,β,β-d4 dihydrochloride	Histamine Receptor Endogenous Metabolite	Neurological Disease Endocrinology Cancer
Histamine-α,α,β,β-d₄ (dihydrochloride) is the deuterium labeled Histamine. Histamine is an organic nitrogenous compound involved in local immune responses as well as regulating physiological function in the gut and acting as a neurotransmitter.

HY-129441

Metoprine BW 197U	Histone Methyltransferase Antifolate	Neurological Disease Cancer
Metoprine (BW 197U) is a potent histamine N-methyltransferase (HMT) inhibitor. Metoprine, a diaminopyrimidine derivative, can cross the blood-brain barrier and increase brain histamine levels by inhibiting HMT . Metoprine is an antifolate and antitumor agent .

HY-101173

Imetit dihydrobromide VUF 8325 dihydrobromide; SKF 91105 dihydrobromide	Histamine Receptor	Neurological Disease
Imetit dihydrobromide (VUF 8325 dihydrobromide) is a high affinity and potent agonist of histamine H3 and H4 receptors, with K_i values of 0.3 and 2.7 nM, respectively. Imetit mimics histamine effect in triggering a shape change in eosinophils (EC₅₀=25 nM) .

HY-E70517

Histamine dehydrogenase, Microorganism	Histamine Receptor	Others
Histamine dehydrogenase, Microorganism (EC 1.4.99) is a homodimeric enzyme which catalyzes oxidative deamination of histamine in the presence of electron carrier .

HY-113412A

3-Methylhistamine dihydrochloride	Endogenous Metabolite	Inflammation/Immunology
3-Methylhistamine dihydrochloride is a degradation product of histamine. 3-Methylhistamine dihydrochloride, a methylated product of histamine, is associated with immune response and shows upregulation in the vaccinated mice .

HY-101189

JNJ-39758979	Histamine Receptor	Neurological Disease Endocrinology
JNJ-39758979, a chemical probe, is a selective, orally active, and high-affinity histamine H₄ receptor antagonist with K_is of 12.5, 5.3, and 25 nM for human, mouse, and monkey histamine H₄ receptor, respectively. JNJ-39758979 functionally antagonizes histamine-induced cAMP inhibition with a pA2 of 7.9 in transfected cells. JNJ-39758979 shows good anti-inflammatory and antipruritic activity .

HY-107568

Iodophenpropit dihydrobromide	Histamine Receptor	Inflammation/Immunology
Iodophenpropit dihydrobromide is a potent and selective histamine H3 receptor antagonist. The binding of [ ¹²⁵I]Iodophenpropit is selective, saturable, readily reversible, and of high affinity (K_D 0.32 nM) .

HY-B1478

Dimaprit dihydrochloride	Histamine Receptor NO Synthase	Endocrinology
Dimaprit dihydrochloride is a selective histamine H2 receptor agonist, it also inhibits nNOS with an IC₅₀ of 49 μM. Dimaprit dihydrochloride can stimulate gastric acid secretion .

HY-101198

Clobenpropit dihydrobromide	Histamine Receptor Apoptosis	Neurological Disease Cancer
Clobenpropit dihydrobromide is a potent histamine H3R antagonist/inverse agonist with a pEC₅₀ of 8.07 for histamine H3LR . Clobenpropit dihydrobromide acts as partial agonist at histamine H4 receptors (K_i 13 nM). Clobenpropit dihydrobromide also binds to serotonin 5-HT3 receptors (K_i 7.4 nM) and α2A/α2C adrenoceptors (K_i 17.4/7.8 nM) . Clobenpropit dihydrobromide increases apoptosis .

HY-14111

GSK189254A 2 Publications Verification GSK189254 free base	Histamine Receptor	Neurological Disease Endocrinology
GSK189254A (GSK189254 free base) is a novel, potent and selective histamine H3 receptor antagonist with pK_i values of 9.59-9.90 and 8.51-9.17 for human and rat H3, respectively.

HY-14567

Ciproxifan FUB-359	Histamine Receptor	Neurological Disease Endocrinology
Ciproxifan (FUB 359) is a potent, selective, orally bioavailable and competitive antagonist of histamine H₃-receptor, with an IC₅₀ of 9.2 nM. Ciproxifan displays low apparent affinity at other receptor subtypes. Ciproxifan can be used for the research of aging disorders and Alzheimer's disease .

HY-13936

1-Methylimidazoleacetic acid 1-Methylimidazole-4-acetic acid	Endogenous Metabolite	Others
1-Methylimidazoleacetic acid (1-Methylimidazole-4-acetic acid) is a histamine metabolite in urine that can be used in the study of mastocytosis .

HY-101321A

Immepip dihydrobromide	Itk	Neurological Disease
Immepip dihydrobromide is a H3 agonist. Immepip dihydrobromide can reduce cortical histamine release. Immepip dihydrobromide can be used for the research of neurological diseases .

HY-101063

Amthamine dihydrobromide	Histamine Receptor	Inflammation/Immunology
Amthamine is a histamine receptor (H1R-H4R) agonist. Amthamine can produce liver congestion and necrosis of liver cells. Amthamine can be used to study the induction effect of H1R-H4 agonist on hepatotoxicity .

HY-15289

Ciproxifan maleate FUB 359 maleate	Histamine Receptor	Neurological Disease Endocrinology
Ciproxifan maleate (FUB 359 maleate) is a potent, selective, orally bioavailable and competitive antagonist of histamine H₃-receptor, with an IC₅₀ of 9.2 nM. Ciproxifan maleate displays low apparent affinity at other receptor subtypes. Ciproxifan maleate can be used for the research of aging disorders and Alzheimer's disease .

HY-B0722R

Histamine dihydrochloride (Standard)	Reference Standards Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite	Neurological Disease Inflammation/Immunology Endocrinology Cancer
Histamine dihydrochloride (Standard) is the analytical standard of Histamine dihydrochloride (HY-B0722). This product is intended for research and analytical applications. Histamine dihydrochloride is the agonist for histamine receptor and a vasodilator. Histamine dihydrochloride is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine dihydrochloride affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine dihydrochloride can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-B1204R

Histamine (Standard) Ergamine (Standard)	Reference Standards Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite	Neurological Disease Inflammation/Immunology Endocrinology Cancer
Histamine (Standard) is the analytical standard of Histamine (HY-B1204). This product is intended for research and analytical applications. Histamine is the agonist for histamine receptor and a vasodilator. Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-100967

SKF 91488 dihydrochloride Homodimaprit dihydrochloride	Histone Methyltransferase	Infection Cardiovascular Disease Inflammation/Immunology
SKF 91488 (Homodimaprit) dihydrochloride is a potent and noncompetitive histamine N-methyltransferase inhibitor with a K_i value of 0.9 μM. SKF 91488 dihydrochloride can block histamine metabolism and increase histamine concentrations. SKF 91488 dihydrochloride can increase blood pressure and enhance bronchoconstriction. SKF 91488 can be used for the researches of infection, inflammation and cardiovascular disease, such as Mycoplasma pneumonia and hemorrhagic hypotension .

HY-109544

Repirinast MY-5116	Histamine Receptor	Inflammation/Immunology
Repirinast (MY-5116) is an orally active anti-allergic agent. Repirinast inhibits histamine release. Repirinast can be used in the research of bronchial asthma .

HY-101321

Immepip	Histamine Receptor	Neurological Disease
Immepip is a H3 agonist. Immepip can reduce cortical histamine release. Immepip can be used for the research of neurological diseases .

HY-137941

Roxatidine	Histamine Receptor Caspase NF-κB p38 MAPK	Inflammation/Immunology
Roxatidine is an active metabolite of Roxatidine acetate hydrochloride, is an orally active histamine H2-receptor antagonist. Roxatidine, an anti-ulcer agent, suppresses histamine release (thus inhibiting proton secretion) and inhibits the production of VEGF-1, an important marker of inflammation and angiogenesis. Anti-allergic inflammatory effect. Roxatidine is promising for research of gastric and duodenal ulcers .

HY-B1204S1

Histamine-d4 Ergamine-d₄	Isotope-Labeled Compounds Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite	Neurological Disease Inflammation/Immunology Endocrinology Cancer
Histamine-d₄ (Ergamine-d₄) is deuterium labeled Histamine (HY-B1204). Histamine is the agonist for histamine receptor and a vasodilator. Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-161477

Histamine/BSA	Endogenous Metabolite	Inflammation/Immunology
Histamine/BSA is a biochemical reagent that can be used as a biological material or organic compound for life science related research .

HY-106334

Noberastine R 64947	Histamine Receptor	Neurological Disease
Noberastine is a potent Histamine H1 antagonist. Noberastine has specific peripheral antihistamine activity .

HY-115447

Clobenpropit	Histamine Receptor	Neurological Disease
Clobenpropit is a potent histamine H3-receptor antagonist. Clobenpropit decreases dopamine release and increases histamine levels in the hypothalamus. Clobenpropit shows antipsychotic-like activities. Clobenpropit causes a resuscitating effect in rats subjected to the hemorrhagic shock .

HY-13218

Acitazanolast WP-871	Histamine Receptor	Inflammation/Immunology
Acitazanolast is an orally active antiallergic agent, can inhibit histamine release. Acitazanolast can be used in study of type I anaphylaxis (immediate) caused by IgE antibodies .

HY-129508

Amthamine	Histamine Receptor	Inflammation/Immunology
Amthamine is a histamine receptor (H1R-H4R) agonist. Amthamine can produce liver congestion and necrosis of liver cells. Amthamine can be used to study the induction effect of H1R-H4 agonist on hepatotoxicity .

HY-165528

Histamine glutarimide XC8	CCR	Inflammation/Immunology
Histamine glutarimide (XC8) is an orally active anti-asthma agent. Histamine glutarimide blocks the maturation of chemokines (CCL2, CCL7, CCL8, CCL13) and inhibits the migration of eosinophils and the degranulation of mast cells. In asthma models induced by carrageenan and rat ovalbumin, Histamine glutarimide can reduce airway resistance and the count of eosinophils in bronchoalveolar lavage fluid. Histamine glutarimide can be used in asthma research .

HY-160668

Histamine H3 antagonist-1	Histamine Receptor Serotonin Transporter	Neurological Disease
Histamine H3 antagonist-1 (Compound 10o) is a histamine H3 antagonist and a serotonin reuptake inhibitor, which can be used in depression research .

HY-B1204S2

Histamine-13C5, 15N3 Ergamine-¹³C₅, ¹⁵N₃	Isotope-Labeled Compounds Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite	Neurological Disease Inflammation/Immunology Endocrinology Cancer
Histamine- ¹³C₅, ¹⁵N₃ (Ergamine- ¹³C₅, ¹⁵N₃) is the ¹³C and ¹⁵N labeled isotope of Histamine (HY-B1204). Histamine is the agonist for histamine receptor and a vasodilator. Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-B0548S1

Hydroxyzine D8	Histamine Receptor	Inflammation/Immunology Endocrinology
Hydroxyzine-d₈ is deuterium labeled Hydroxyzine. Hydroxyzine is a histamine H1-receptor antagonist .

HY-107557

Proxyfan	Histamine Receptor	Neurological Disease
Proxyfan is a potent histamine H3 receptor antagonist with K_i values of 2.9 nM and 2.7 nM for rat and human H3 receptor, respectively. Proxyfan is over 1000-fold more potent at H3 receptors than other histamine receptors .

HY-107557A

Proxyfan Oxalate	Histamine Receptor	Neurological Disease
Proxyfan Oxalate is a potent histamine H3 receptor antagonist with K_i values of 2.9 nM and 2.7 nM for rat and human H3 receptor, respectively. Proxyfan Oxalate is over 1000-fold more potent at H3 receptors than other histamine receptors .

HY-161333

ADS031	Histamine Receptor	Inflammation/Immunology
ADS031, a histamine H3R antagonist, displays 12.5 nM affinity at the hH3R and the highest inhibitory activity against AChE (IC₅₀ = 1.537 μM) .

HY-N3114

Panaxydiol	Histamine Receptor	Inflammation/Immunology
Panaxydiol exhibits *histamine*-release inhibition activity . Panaxydiol is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-116777

Impromidine SKF 92676	Histamine Receptor	Others
Impromidine (SKF 92676) is a potent agonist for histamine H2 receptor. Impromidine induces gastric mucosal blood flow and acid secretion .

HY-122968

Brocresine NSD-1065	Endogenous Metabolite	Neurological Disease
Brocresine (NSD-1065) is an orally active histidine decarboxylase inhibitor and inhibits the formation of histamine from histidine. Brocresine is also a L-amino acid decarboxylase inhibitor with both a peripheral and central action. Brocresine inhibits gastric secretory response to administration of exogenous gastrin .

HY-105505

KF-17625	Phosphodiesterase (PDE) Histamine Receptor	Inflammation/Immunology
KF-17625 is an orally active bronchodilator. KF-17625 can inhibit bronchoconstriction induced by Carbachol (HY-B1208), Histamine (HY-B1204), or Leukotriene D4 (HY-113456). KF-17625 can inhibit canine tracheal phosphodiesterase (PDE) IV (IC₅₀ = 12 μM) and Concanavalin-A (HY-P2149)-induced *histamine* release from rat mast cells (44% inhibition at 10 mM). KF-17625 can be used for the researches of immunology and inflammation .

HY-14567A

Ciproxifan hydrochloride FUB-359 hydrochloride	Histamine Receptor	Neurological Disease Endocrinology
Ciproxifan (FUB 359) hydrochloride is a potent, selective, orally bioavailable and competitive antagonist of histamine H₃-receptor, with an IC₅₀ of 9.2 nM. Ciproxifan hydrochloride displays low apparent affinity at other receptor subtypes. Ciproxifan hydrochloride can be used for the research of aging disorders and Alzheimer's disease .

HY-A0129R

Histamine phosphate (Standard) histamine diphosphate (Standard)	Reference Standards Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite	Neurological Disease Inflammation/Immunology Endocrinology Cancer
Histamine phosphate (Standard) is the analytical standard of Histamine phosphate (HY-A0129). This product is intended for research and analytical applications. Histamine phosphate is the agonist for histamine receptor and a vasodilator. Histamine phosphate is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine phosphate affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine phosphate can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-158297

Histamine/OVA	Endogenous Metabolite Histamine Receptor	Inflammation/Immunology
Histamine/OVA is a biochemical reagent that can be used as a biological material or organic compound for life science related research .

HY-145106

Histamine H4 receptor antagonist-1	Histamine Receptor	Inflammation/Immunology
Histamine H4 receptor antagonist-1 is an antagonist of histamine H4 receptor extracted from patent WO2010108059A1 compound 60 .

HY-B1204S4

Histamine-15N3 Ergamine-¹⁵N₃	Isotope-Labeled Compounds Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite	Neurological Disease Inflammation/Immunology Endocrinology Cancer
Histamine- ¹⁵N₃ is the ¹⁵N₃-labeled Histamine (HY-B1204). Histamine is the agonist for histamine receptor and a vasodilator. Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-115833

Histamine H4 receptor antagonist-2	Histamine Receptor	Cancer
Histamine H4 receptor antagonist-2 serves as a potent activator of p53, demonstrating significant antitumor efficacy.

HY-122166

Histamine receptors inhibitor 1	STAT	Others
Histamine receptors inhibitor 1 (compound 303) is an inhibitor of H1R or H4R that can be used in the research of inflammatory, autoimmune, allergic, and ocular .

HY-E70341

Histamine N-methyl transferase, rat	Endogenous Metabolite	Others
Histamine N-methyl transferase, rat is a biocatalyst and a key enzyme in new biocatalyst technology. Enzyme engineering focuses on enhancing enzyme reaction kinetics, substrate selectivity, and activity under harsh conditions such as low or high pH. By introducing stimulus responsiveness to these enzyme modifications, dynamic control of activity is also possible .

Cat. No.	Nombre del producto	Category	Target	Chemical Structure

HY-B1204

*Histamine* Maximum Cited Publications 20 Publications Verification Ergamine	Structural Classification Productos naturales Human Gut Microbiota Metabolites Neurological Disease Classification of Application Fields Endogenous metabolite Disease Research Fields Endocrinology Cancer	Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite
Histamine is the agonist for histamine receptor and a vasodilator. Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-17042

Cetirizine 3 Publications Verification	Classification of Application Fields Ketones, Aldehydes, Acids Endogenous metabolite Disease Research Fields Endocrinology Source Classification	Histamine Receptor
Cetirizine, a second-generation antihistamine and the carboxylated metabolite of hydroxyzine, is a specific, orally active and long-acting histamine H1-receptor antagonist. Cetirizine marks antiallergic properties and inhibits eosinophil chemotaxis during the allergic response .

HY-B0539

Desloratadine 10+ Cited Publications Sch34117	Structural Classification Productos naturales Classification of Application Fields Endogenous metabolite Disease Research Fields Endocrinology	Histamine Receptor TNF Receptor Leukotriene Receptor
Desloratadine (Sch34117) is an orally active and selective H1 receptor antagonist (K_i=0.9 nM) with anti-inflammatory and anti-allergic activities. Desloratadine inhibits the release of histamine and LTC4 from human basophils and targets the regulatory signals of IL-4 and IL-13 production in basophils. Desloratadine significantly alleviates SAR symptoms in patients with concurrent asthma and can be used in the study of seasonal allergic rhinitis and chronic idiopathic urticaria .

HY-B0303

Diphenhydramine 5+ Cited Publications	Alkaloids Classification of Application Fields Other Alkaloids Endogenous metabolite Inflammation/Immunology Disease Research Fields Source Classification	Histamine Receptor Bacterial Endogenous Metabolite iGluR
Diphenhydramine is a first-generation histamine H1-receptor antagonist with anti-cholinergic effect. Diphenhydramine hydrochloride can across the ovine blood-brain barrier (BBB) .

HY-N0349

Methyl paraben 5+ Cited Publications Methyl 4-hydroxybenzoate	Structural Classification Tsuga dumosa Classification of Application Fields Plants Endogenous metabolite Infection Monophenols Animals Pinaceae Phenols Cosmetic Research Disease Research Fields Source Classification	Environmental Pollutants Endogenous Metabolite Bacterial
Methyl Paraben is a standardized methyl paraben allergen isolated from Yunnan hemlock (Tsuga dumosa). Methyl Paraben is commonly used as a stable, non-volatile preservative. Methyl Paraben increases histamine release and cellular regulation of immunity, blocks sodium channels, and prevents ischemia-reperfusion injury .

HY-B0722

Histamine dihydrochloride Maximum Cited Publications 20 Publications Verification	Structural Classification Productos naturales Classification of Application Fields Metabolic Disease Endogenous metabolite Disease Research Fields Source Classification	Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite
Histamine dihydrochloride is the agonist for histamine receptor and a vasodilator. Histamine dihydrochloride is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine dihydrochloride affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine dihydrochloride can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-B0303A

Diphenhydramine hydrochloride 5+ Cited Publications	Alkaloids Classification of Application Fields Other Alkaloids Endogenous metabolite Inflammation/Immunology Disease Research Fields Source Classification	Histamine Receptor Endogenous Metabolite Bacterial Apoptosis
Diphenhydramine hydrochloride is a first-generation histamine H1-receptor antagonist with anti-cholinergic effect. Diphenhydramine hydrochloride can across the ovine blood-brain barrier (BBB) .

HY-A0129

Histamine phosphate Maximum Cited Publications 20 Publications Verification histamine diphosphate	Alkaloids Neurological Disease Classification of Application Fields Other Alkaloids Endogenous metabolite Disease Research Fields Endocrinology Source Classification Cancer	Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite
Histamine phosphate is the agonist for histamine receptor and a vasodilator. Histamine phosphate is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine phosphate affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine phosphate can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-N0054

Osthole 15+ Cited Publications Osthol; NSC 31868	Cardiovascular Disease Classification of Application Fields Coumarins Plants Biological Pesticide Research Agricultural Research Infection other families Phenylpropanoids Inflammation/Immunology Disease Research Fields Endocrinology Source Classification	Histamine Receptor Apoptosis Parasite HBV
Osthole (Osthol) is a natural antihistamine alternative. Osthole may be a potential inhibitor of histamine H₁ receptor activity. Osthole also suppresses the secretion of HBV in cells.

HY-B0157

Ketotifen 3 Publications Verification HC 20-511	Infection Productos naturales Classification of Application Fields Endogenous metabolite Inflammation/Immunology Disease Research Fields Endocrinology Source Classification	Endogenous Metabolite Histamine Receptor SARS-CoV Influenza Virus
Ketotifen (HC 20-511) is an orally active second-generation noncompetitive histamine 1 (H1) receptor blocker and mast cell stabilizer. Ketotifen can block 6-phosphogluconate dehydrogenase (PGD) in vitro. Ketotifen also has antiviral activity against SARS-CoV-2 and Influenza virus. Ketotifen can be used to the research of autoimmune encephalomyelitis (EAE) and asthma attack prevention .

HY-B0157A

Ketotifen fumarate 3 Publications Verification HC 20511 fumarate	Productos naturales Classification of Application Fields Endogenous metabolite Inflammation/Immunology Disease Research Fields Source Classification	Histamine Receptor Endogenous Metabolite SARS-CoV Influenza Virus
Ketotifen (HC 20-511) fumarate is an orally active second-generation noncompetitive histamine 1 (H1) receptor blocker and mast cell stabilizer. Ketotifen fumarate can block 6-phosphogluconate dehydrogenase (PGD) in vitro. Ketotifen fumarate also has antiviral activity against SARS-CoV-2 and Influenza virus. Ketotifen fumarate can be used to the research of autoimmune encephalomyelitis (EAE) and asthma attack prevention .

HY-W053787

1-Methylhistamine dihydrochloride	Productos naturales Classification of Application Fields Metabolic Disease Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite
1-Methylhistamine dihydrochloride is a histamine metabolite .

HY-113413

Imidazoleacetic acid 2 Publications Verification Imidazolyl-4-acetic acid	Structural Classification Human Gut Microbiota Metabolites Classification of Application Fields Ketones, Aldehydes, Acids Metabolic Disease Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite GABA Receptor
Imidazoleacetic acid (Imidazolyl-4-acetic acid) is a blood-brain barrier-permeable full agonist of the GABA_A receptor. Imidazoleacetic acid forms via histamine oxidation in the mouse brain. Imidazoleacetic acid exerts multiple neurochemical and behavioral effects. Imidazoleacetic acid induces a range of centrally mediated effects, including analgesia, sedation, hypnosis, as well as reductions in blood pressure, body temperature, isolation-induced aggression and motor activity .

HY-N0631

Cornuside 5+ Cited Publications	Structural Classification Iridoids Cornaceae Classification of Application Fields Cornus officinalis Sieb. et Zucc. Terpenoids Phenols Polyphenols Plants Inflammation/Immunology Disease Research Fields Source Classification	p38 MAPK NF-κB JNK Cholinesterase (ChE) Acyltransferase NO Synthase Interleukin Related TNF Receptor Prostaglandin Receptor ERK COX
Cornuside is an iridoid glycoside with anti-allergic, anti-inflammatory, and neuroprotective activities. Cornuside exerts anti-allergic activity by downregulating the p38 MAPK, JNK, and NF-κB signaling pathways, and inhibits IgE-mediated histamine release from mast cells. Cornuside improves cognitive impairment in mice by inhibiting BACE1 activity (IC₅₀ = 55.84 μg/mL) and enhancing ChAT activity. Cornuside inhibits LPS (HY-D1056)-induced inflammatory mediators, including iNOS, COX-2, PGE2, TNF-α, IL-6, and IL-1β, by suppressing NF-κB activation .

HY-N2081

Skimmianine 3 Publications Verification	Alkaloids Classification of Application Fields Rutaceae Quinoline Alkaloids Plants Skimmia reevesiana Fort. Inflammation/Immunology Disease Research Fields Source Classification	Cholinesterase (ChE) PI3K Akt NF-κB
Skimmianine is an orally active furoquiniline alkaloid present mainly in the Rutaceae family. Skimmianine has analgesic, antispastic, sedative, and anti-inflammatory properties. Skimmianine inhibits acetylcholinesterase (AChE) (IC₅₀ = 8.6 μg/mL). Skimmianine exhibits cytotoxicity against a variety of cancer cell lines and genotoxicity. Skimmianine has antioxidant and anti-inflammatory effects on ischemia-reperfusion (IR) injury. Skimmianine exerts anti-inflammatory effects through activation of the phosphatidylinositol-3-kinase (PI3K)-protein kinase B (AKT) pathway. Skimmianine is neuroprotective by targeting the NF-κB activation pathway to prevent neuroinflammation. Skimmianine inhibits the release of histamine, intracellular Ca ²⁺ signaling and protein kinase C signaling .

HY-A0191

Dexbrompheniramine (+)-Brompheniramine; (S)-Brompheniramine	Structural Classification Productos naturales Classification of Application Fields Endogenous metabolite Inflammation/Immunology Disease Research Fields Source Classification	Endogenous Metabolite Histamine Receptor TRP Channel
Dexbrompheniramine ((+)-Brompheniramine; (S)-Brompheniramine) is a dual inhibitor of histamine H1 receptor and TRPV1 receptor that can cross the blood-brain barrier. Dexbrompheniramine exerts its effects by functionally blocking H1 receptor activity and dose-dependently inhibiting TRPV1-mediated calcium responses, including Capsaicin (HY-10448)-induced responses. The combination of Dexbrompheniramine with Cimetidine (HY-14289) eliminates histamine-induced and sham-feeding-induced drinking behavior, whereas Dexbrompheniramine alone does not induce thirst or alter sham-feeding behavior in rats. Dexbrompheniramine can be used in the research of chronic cough and related pathological mechanisms .

HY-W062542

1-Methylhistamine	Productos naturales Microorganisms Classification of Application Fields Other disease Disease markers Metabolic Disease Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite
1-Methylhistamine is a histamine (Him) metabolite.

HY-112175

N-Acetylhistamine 3 Publications Verification N-Omega-acetylhistamine	Microorganisms Classification of Application Fields Ketones, Aldehydes, Acids Endogenous metabolite Disease Research Fields Endocrinology Source Classification	Histamine Receptor Endogenous Metabolite
N-Acetylhistamine is a histamine metabolite. N-acetylhistamine can be used as a potential biomarker of histidine metabolism for anaphylactoid reactions.

HY-B0426A

Olopatadine hydrochloride ALO4943A; KW4679	Structural Classification Alkaloids Classification of Application Fields Ketones, Aldehydes, Acids Other Alkaloids Endogenous metabolite Inflammation/Immunology Disease Research Fields Source Classification	Histamine Receptor CXCR
Olopatadine hydrochloride (ALO4943A; KW4679) is an orally active histamine H1 receptor antagonist and mast cell stabilizer. Olopatadine hydrochloride exerts antiallergic effects by blocking histamine H1 receptor-mediated activities. Olopatadine hydrochloride inhibits exocytosis, chemokine release, F-actin polymerization, CXCL10-induced calcium influx, and T cell chemotactic activity. Olopatadine hydrochloride also reduces the expression levels of CXCR3 on the surface of CD4 ⁺ and CD8 ⁺ T cells. Olopatadine hydrochloride inhibits scratching behavior, improves dermatitis scores, and suppresses intraepidermal neurite outgrowth. Olopatadine hydrochloride simultaneously decreases the levels of inflammatory markers, growth factors, histamine, and specific IgE, while increasing the expression of ErbB3A/HER3A. Olopatadine hydrochloride can be used in research related to seasonal pollinosis, chronic rhinitis, urticaria, allergic conjunctivitis, alopecia areata, and atopic dermatitis .

HY-107566

Conessine	Infection other families Classification of Application Fields Plants Disease Research Fields Steroids Source Classification	Histamine Receptor Parasite MDM-2/p53 NF-κB FOXO Bacterial
Conessine is an orally active and BBB-penetrable selective histamine H3 receptor antagonist. The pK_i values of Conessine for rat and human H3 receptors are 7.61 and 8.27, respectively. Conessine is an inhibitor of the multidrug efflux pump system in Pseudomonas aeruginosa and can enhance the activity of antibiotics. Conessine has antimalarial activity. Conessine can also be used in the research of muscle atrophy .

HY-W127758

Alginic acid 1 Publications Verification	Structural Classification Polysaccharides Microorganisms Classification of Application Fields Inflammation/Immunology Disease Research Fields Saccharides Source Classification	Histamine Receptor Apoptosis Autophagy Endogenous Metabolite
Alginic acid is a natural polysaccharide, which has been widely concerned and applied due to its excellent water solubility, film formation, biodegradability and biocompatibility. Alginic acid induces oxidative stress-mediated hormone secretion disorder, apoptosis and autophagy in mouse granulosa cells and ovaries. Alginic acid has an inhibitory effect on histamine release. Anti-anaphylactic and anti-inflammatory properties .

HY-113412A

3-Methylhistamine dihydrochloride	Alkaloids Classification of Application Fields Other Alkaloids Endogenous metabolite Inflammation/Immunology Disease Research Fields Source Classification	Endogenous Metabolite
3-Methylhistamine dihydrochloride is a degradation product of histamine. 3-Methylhistamine dihydrochloride, a methylated product of histamine, is associated with immune response and shows upregulation in the vaccinated mice .

HY-17428

Tripelennamine hydrochloride	Structural Classification Alkaloids Classification of Application Fields Pyridine Alkaloids Endogenous metabolite Inflammation/Immunology Disease Research Fields Source Classification	Histamine Receptor
Tripelennamine hydrochloride is a histamine H1-receptor antagonist. Tripelennamine hydrochloride effectively reverses histamine-induced bronchoconstriction, increased transpulmonary pressure, elevated pulmonary vascular resistance and reduced dynamic compliance. Tripelennamine hydrochloride does not significantly affect arterial hypoxemia, hemoglobin desaturation and hypercapnia in horses undergoing short-term high-intensity exercise. Tripelennamine hydrochloride exhibits local and central analgesic activity. Tripelennamine hydrochloride can be used in studies related to emphysema, urticaria and acute laminitis .

HY-N2173

Forsythoside E 1 Publications Verification	Structural Classification Oleaceae Classification of Application Fields Simple Phenylpropanols Phenols Polyphenols Phenylpropanoids Forsythia suspensa (Thunb.) Vahl Plants Inflammation/Immunology Disease Research Fields Source Classification	Others
Forsythoside E is a phenylethanoid glycoside compound. Forsythoside E can be isolated from Shuanghuanglian. Forsythoside E does not induce vascular leakage or promote histamine release in mice. Forsythoside E does not cause pseudo-allergic reactions .

HY-A0027

Fenspiride hydrochloride	Classification of Application Fields Disease Research Fields Endocrinology	Histamine Receptor Phosphodiesterase (PDE)
Fenspiride, an orally active non-steroidal antiinflammatory agent, is an antagonist of *H1-histamine* receptor. Fenspiride inhibites phosphodiesterase 3 (PDE3), phosphodiesterase 4 (PDE4) and phosphodiesterase 5 (PDE5) activities with -log IC₅₀** values of 3.44, 4.16 and approximately 3.8, respectively. Fenspiride can be used for the research of respiratory diseases .

HY-N3320

Marmin	Rutaceae Coumarins Phenylpropanoids Plants Aegle marmelos (L.) Correa Source Classification	Others
Marmin is a coumarin, that can be isolated from the immature bark of Aegle marmelos Correa. Marmin antagonizes the Histamine (HY-B1204)-induced contraction in competitive manner .

HY-W062109

Olopatadine	Structural Classification Alkaloids Classification of Application Fields Other Alkaloids Endogenous metabolite Inflammation/Immunology Disease Research Fields Source Classification	Histamine Receptor CXCR
Olopatadine (ALO4943A; KW4679) is an orally active histamine H1 receptor antagonist and mast cell stabilizer. Olopatadine exerts antiallergic effects by blocking histamine H1 receptor-mediated activities. Olopatadine inhibits exocytosis, chemokine release, F-actin polymerization, CXCL10-induced calcium influx, and T cell chemotactic activity. Olopatadine also reduces the expression levels of CXCR3 on the surface of CD4 ⁺ and CD8 ⁺ T cells. Olopatadine inhibits scratching behavior, improves dermatitis scores, and suppresses intraepidermal neurite outgrowth. Olopatadine simultaneously decreases the levels of inflammatory markers, growth factors, histamine, and specific IgE, while increasing the expression of ErbB3A/HER3A. Olopatadine can be used in research related to seasonal pollinosis, chronic rhinitis, urticaria, allergic conjunctivitis, alopecia areata, and atopic dermatitis .

HY-N0742

Absinthin	Triterpenes Classification of Application Fields Terpenoids Other Diseases Plants Acacia confusa Merr. Compositae Disease Research Fields Source Classification	Others
Absinthin is a structurally unique triterpene, and is responsible for the high bitter value of wormwood. Absinthin is an agonist of the bitter taste receptor hTAS2R46, which reduces cytosolic Ca ²⁺-rises induced by histamine by a receptor-specific mechanism mediated by hTAS2R46 .

HY-N8593

Undecane	Infection Structural Classification Productos naturales Microorganisms Classification of Application Fields Disease Research Fields Source Classification	Environmental Pollutants p38 MAPK TNF Receptor NF-κB Interleukin Related Histamine Receptor PKA
Undecane is a potent cAMP agonist with anti-allergic and anti-inflammatory activities. Undecane inhibits degranulation and the secretion of *histamine* and TNF-α. Undecane reverses the increased levels of p38 phosphorylation, NF-κB transcriptional activity and target cytokine/chemokine genes, including thymus and activation-regulated chemokine (TARC), macrophage-derived chemokine (MDC) and interleukin-8 (IL-8). Undecane can be used for the study of skin inflammatory disorders, such as atopic dermatitis .

HY-B0722R

Histamine dihydrochloride (Standard)	Structural Classification Productos naturales Endogenous metabolite Source Classification	Reference Standards Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite
Histamine dihydrochloride (Standard) is the analytical standard of Histamine dihydrochloride (HY-B0722). This product is intended for research and analytical applications. Histamine dihydrochloride is the agonist for histamine receptor and a vasodilator. Histamine dihydrochloride is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine dihydrochloride affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine dihydrochloride can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-B1204R

Histamine (Standard) Ergamine (Standard)	Structural Classification Productos naturales Human Gut Microbiota Metabolites Microorganisms Endogenous metabolite	Reference Standards Histamine Receptor p38 MAPK Akt Reactive Oxygen Species (ROS) Apoptosis Endogenous Metabolite
Histamine (Standard) is the analytical standard of Histamine (HY-B1204). This product is intended for research and analytical applications. Histamine is the agonist for histamine receptor and a vasodilator. Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-N15663

(-)-Epigallocatechin-3-O-(4-O-methyl)gallate EGCG4′′Me	Structural Classification Phenols Polyphenols Camellia sinensis (L.) O. Ktze. Plants Source Classification Theaceae	Drug Derivative
(-)-Epigallocatechin-3-O-(4-O-methyl)gallate is an orally active catechin derivative found in Taiwanese oolong tea. (-)-Epigallocatechin-3-O-(4-O-methyl)gallate can inhibit histamine release and exhibits anti-inflammation and anti-allergic effect. (-)-Epigallocatechin-3-O-(4-O-methyl)gallate can be used for the researches of immunology and inflammation, such as type I allergic .

HY-N10182

Spinacetin 1 Publications Verification	Phyllodium pulchellum (L.) Desv. Flavonols Flavonoids Plants Compositae Source Classification	Histamine Receptor
Spinacetin is a natural product that can be isolated from Inula japonica. Spinacetin inhibits the release of *histamine*. Spinacetin has anti-inflammatory activity .

HY-B0303R

Diphenhydramine (Standard)	Structural Classification Alkaloids Other Alkaloids Endogenous metabolite Source Classification	Reference Standards Histamine Receptor Bacterial Endogenous Metabolite iGluR
Diphenhydramine (Standard) is the analytical standard of Diphenhydramine. This product is intended for research and analytical applications. Diphenhydramine is a first-generation histamine H1-receptor antagonist with anti-cholinergic effect. Diphenhydramine hydrochloride can across the ovine blood-brain barrier (BBB) .

HY-N3007A

(E)-Naringenin chalcone	Phenols Polyphenols Solanum lycopersicum L. Solanaceae Plants	Others
(E)-Naringenin chalcone is an orally active anti-allergic agent. (E)-Naringenin chalcone also has antioxidant, anti-inflammatory activities. (E)-Naringenin chalcone can improve adipocyte functions. (E)-Naringenin chalcone inhibits histamine release from rat peritoneal mast cell .

HY-103183

CV1808 2-Phenylaminoadenosine	Productos naturales Classification of Application Fields Endogenous metabolite Inflammation/Immunology Disease Research Fields Source Classification	Adenosine Receptor Endogenous Metabolite
CV1808 (2-Phenylaminoadenosine) is a non-selective A2 adenosine receptor (A2 AR) agonist with K_is of 76 and 1450 nM for A2A and A3 adenosine receptor subtypes, respectively .

HY-N0349R

Methyl paraben (Standard) Methyl 4-hydroxybenzoate (Standard)	Structural Classification Tsuga dumosa Monophenols Animals Pinaceae Phenols Plants Endogenous metabolite Source Classification	Reference Standards Bacterial Endogenous Metabolite
Methyl paraben (Standard) is the analytical standard of Methyl paraben. This product is intended for research and analytical applications. Methyl Paraben is a standardized methyl paraben allergen isolated from Yunnan hemlock (Tsuga dumosa). Methyl Paraben is commonly used as a stable, non-volatile preservative. Methyl Paraben increases histamine release and cellular regulation of immunity, blocks sodium channels, and prevents ischemia-reperfusion injury .

HY-N7885

(25R)-Spirost-4-ene-3,12-dione (-)-(25R)-Spirost-4-ene-3,12-dione	Structural Classification Polygonum chinense Linn. Polygonaceae Plants Steroids Source Classification	Others
(25R)-Spirost-4-ene-3,12-dione ((-)-(25R)-Spirost-4-ene-3,12-dione) is a natural product that has an inhibitory effect on neutrophil superoxide anion production and histamine release from mast cells .

HY-13710

Dimethindene	Alkaloids Neurological Disease Classification of Application Fields Pyridine Alkaloids Endogenous metabolite Disease Research Fields Source Classification	Histamine Receptor Potassium Channel Endogenous Metabolite
Dimethindene is a potent, selective histamine H1 antagonist. Dimethindene impairs cutaneous wound healing (WH). Dimethindene can block K ⁺ currents .

HY-117616

Laurotetanine (+)-Laurotetanine	Alkaloids Aporphine Alkaloids Classification of Application Fields Plants Lauraceae Isoquinoline Alkaloids Disease Research Fields Lindera aggregata (Sims) Kosterm. Cancer Source Classification	NF-κB
Laurotetanine ((+)-Laurotetanine) is an potent and orally active isoquinoline alkaloid and could be extracted from the roots of Litsea cubeba (Lour.) Pers. Laurotetanine exerts an anti-asthmatic effect by inhibition of IgE, histamine, and inflammatory reactions via down-regulating MUC5AC and NF-κB signaling pathways .

HY-N3421

Koaburaside	Eucommia ulmoides Oliver Eucommiaceae Plants Saccharides Monosaccharides Source Classification	Interleukin Related TNF Receptor Influenza Virus
Koaburaside is a cytoprotective and anti-inflammatory natural compound. Koaburaside shows antioxidant activity with an IC₅₀ of 9.0 μM for DPPH-free radical scavenging assay. Koaburaside inhibits *histamine* release and expressions of IL-6 and TNF-α in human mast cells. Koaburaside also effectively inhibits influenza A neuraminidase .

HY-W053787R

1-Methylhistamine dihydrochloride (Standard)	Structural Classification Productos naturales Endogenous metabolite Source Classification	Reference Standards Endogenous Metabolite
1-Methylhistamine dihydrochloride is a histamine metabolite .

HY-W983015

Davidigenin	Euphorbia portlandica L. Phenols Polyphenols Euphorbiaceae Plants Source Classification	5-HT Receptor
Davidigenin is an antidiabetic compound with antitumor, antispasmodic, and antioxidant activities. Davidigenin inhibits duodenal contractions induced by acetylcholine or histamine.

HY-A0178

Isothipendyl AY 56012	Alkaloids Classification of Application Fields Pyridine Alkaloids Endogenous metabolite Inflammation/Immunology Disease Research Fields Source Classification	Histamine Receptor Endogenous Metabolite
Isothipendyl (AY 56012), an azaphenothiazine derivative, is a potent histamine 1 (H1) receptor antagonist. Isothipendyl is a primary metabolite .

HY-N3114

Panaxydiol	Panax ginseng C. A. Meyer Productos naturales Classification of Application Fields Plants Inflammation/Immunology Disease Research Fields Araliaceae Source Classification	Histamine Receptor
Panaxydiol exhibits *histamine*-release inhibition activity . Panaxydiol is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-N3622

Corchoionoside C (6S,9S)-Roseoside	Capparis spinosa L. Plants Capparidaceae Saccharides Monosaccharides Source Classification	Others
Corchoionoside C ((6S,9S)-Roseoside), an ionone glucoside, can be isolated from Capparis spinosa. Corchoionoside C inhibits the antigen-antibody reaction induced histamine release from rat peritoneal exudate cells .

HY-N15364

Imidazoleacetic acid riboside	Structural Classification Ketones, Aldehydes, Acids Endogenous metabolite Source Classification	Endogenous Metabolite
Imidazoleacetic acid riboside is a metabolite of *histamine, belonging to the riboside conjugates of imidazoleacetic acid. Imidazoleacetic acid riboside is generated by dephosphorylation of imidazoleacetic acid ribonucleotide in rats. Imidazoleacetic acid riboside can be detected in the kidney and brain tissue after administration of labeled histamine* or histidine, and exists as a urinary metabolite of histamine in both rats and humans. Imidazoleacetic acid riboside is not only excreted in urine, but also can be used to capture and isolate ribose for studying the metabolic pathways of ribose synthesis from glucose or glucuronolactone via the pentose phosphate pathway or the C-6 oxidation pathway in vivo .

HY-B0426AR

Olopatadine hydrochloride (Standard) ALO4943A (Standard); KW4679 (Standard)	Structural Classification Alkaloids Ketones, Aldehydes, Acids Other Alkaloids Endogenous metabolite Source Classification	Reference Standards Histamine Receptor CXCR
Olopatadine (hydrochloride) (Standard) is the analytical standard of Olopatadine (hydrochloride). This product is intended for research and analytical applications. Olopatadine hydrochloride (ALO4943A; KW4679) is an orally active histamine H1 receptor antagonist and mast cell stabilizer. Olopatadine hydrochloride exerts antiallergic effects by blocking histamine H1 receptor-mediated activities. Olopatadine hydrochloride inhibits exocytosis, chemokine release, F-actin polymerization, CXCL10-induced calcium influx, and T cell chemotactic activity. Olopatadine hydrochloride also reduces the expression levels of CXCR3 on the surface of CD4 ⁺ and CD8 ⁺ T cells. Olopatadine hydrochloride inhibits scratching behavior, improves dermatitis scores, and suppresses intraepidermal neurite outgrowth. Olopatadine hydrochloride simultaneously decreases the levels of inflammatory markers, growth factors, histamine, and specific IgE, while increasing the expression of ErbB3A/HER3A. Olopatadine hydrochloride can be used in research related to seasonal pollinosis, chronic rhinitis, urticaria, allergic conjunctivitis, alopecia areata, and atopic dermatitis .

HY-N13148

Ganodermatriol	Triterpenes Structural Classification Microorganisms Terpenoids Source Classification	Others
Ganodermatriol is a lanostane type triterpenoid compound derived from Ganoderma lucidum. These compounds have been reported to possess various biological activities, such as inhibiting histamine release from rat mast cells and exhibiting anti-hepatoma cell activity in vitro .

HY-B0157AR

Ketotifen fumarate (Standard) HC 20511 fumarate (Standard)	Structural Classification Productos naturales Endogenous metabolite Source Classification	Reference Standards Histamine Receptor Endogenous Metabolite SARS-CoV Influenza Virus
Ketotifen (fumarate) (Standard) is the analytical standard of Ketotifen (fumarate). This product is intended for research and analytical applications. Ketotifen (HC 20-511) fumarate is an orally active second-generation noncompetitive histamine 1 (H1) receptor blocker and mast cell stabilizer. Ketotifen fumarate can block 6-phosphogluconate dehydrogenase (PGD) in vitro. Ketotifen fumarate also has antiviral activity against SARS-CoV-2 and Influenza virus. Ketotifen fumarate can be used to the research of autoimmune encephalomyelitis (EAE) and asthma attack prevention .

Cat. No.	Nombre del producto	Chemical Structure

HY-B1204S

Histamine-α,α,β,β-d4 dihydrochloride
Histamine-α,α,β,β-d₄ (dihydrochloride) is the deuterium labeled Histamine. Histamine is an organic nitrogenous compound involved in local immune responses as well as regulating physiological function in the gut and acting as a neurotransmitter.

HY-B0303AS

Diphenhydramine-d6 hydrochloride
Diphenhydramine-d₆ (hydrochloride) is the deuterium labeled Diphenhydramine hydrochloride. Diphenhydramine hydrochloride is a first-generation histamine H1-receptor antagonist with anti-cholinergic effect. Diphenhydramine hydrochloride can across the ovine blood-brain barrier (BBB) .

HY-W053787S

1-Methylhistamine-d3 dihydrochloride
1-Methylhistamine-d₃ (dihydrochloride) is the deuterium labeled 1-Methylhistamine (dihydrochloride) . 1-Methylhistamine dihydrochloride is a histamine metabolite .

HY-17043S1

Loratadine-d5
Loratadine-d₅ is the deuterium labeled Loratadine. Loratadine (SCH-29851) is a selective inverse peripheral histamine H1-receptor agonist with an IC50 of >32 μM. Loratadine has anti-dengue-virus (DENV) activity. Loratadine can inhibit immunologic release of inflammatory mediators.

HY-17042S1

Cetirizine-d8
Cetirizine-d₈ is a deuterium labeled Cetirizine. Cetirizine, a second-generation antihistamine and the carboxylated metabolite of hydroxyzine, is a specific, orally active and long-acting histamine H1-receptor antagonist. Cetirizine marks antiallergic properties and inhibits eosinophil chemotaxis during the allergic response .

HY-B0303AS1

Diphenhydramine-d5 hydrochloride
Diphenhydramine-d₅ (hydrochloride) is the deuterium labeled Diphenhydramine hydrochloride. Diphenhydramine hydrochloride is a first-generation histamine H1-receptor antagonist with anti-cholinergic effect. Diphenhydramine hydrochloride can across the ovine blood-brain barrier (BBB) .

HY-B1204S1

Histamine-d4

Histamine-d₄ (Ergamine-d₄) is deuterium labeled Histamine (HY-B1204). Histamine is the agonist for histamine receptor and a vasodilator. Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-N0349S1

Methyl paraben-13C6

Methyl Paraben- ¹³C₆ (Methyl 4-hydroxybenzoate- ¹³C₆) is a ¹³C labeled Methyl Paraben (HY-N0349) . Methyl Paraben, isolated from the barks of Tsuga dumosa the methyl ester of p-hydroxybenzoic acid, is a standardized chemical allergen. Methyl Paraben is a stable, non-volatile compound used as an antimicrobial preservative in foods, agents and cosmetics. The physiologic effect of Methyl Paraben is by means of increased histamine release, and cell-mediated immunity .

HY-W062109S

Olopatadine-d6

Olopatadine-d₆ is the deuterium labeled Olopatadine. Olopatadine hydrochloride (ALO4943A; KW4679) is an orally active histamine H1 receptor antagonist and mast cell stabilizer. Olopatadine hydrochloride exerts antiallergic effects by blocking histamine H1 receptor-mediated activities. Olopatadine hydrochloride inhibits exocytosis, chemokine release, F-actin polymerization, CXCL10-induced calcium influx, and T cell chemotactic activity. Olopatadine hydrochloride also reduces the expression levels of CXCR3 on the surface of CD4 ⁺ and CD8 ⁺ T cells. Olopatadine hydrochloride inhibits scratching behavior, improves dermatitis scores, and suppresses intraepidermal neurite outgrowth. Olopatadine hydrochloride simultaneously decreases the levels of inflammatory markers, growth factors, histamine, and specific IgE, while increasing the expression of ErbB3A/HER3A. Olopatadine hydrochloride can be used in research related to seasonal pollinosis, chronic rhinitis, urticaria, allergic conjunctivitis, alopecia areata, and atopic dermatitis .

HY-B0725S

Doxepin-d3 hydrochloride
Doxepin-d₃ (hydrochloride) is a deuterium labeled Doxepin Hydrochloride. Doxepin hydrochloride is an orally active tricyclic antidepressant. Doxepin hydrochloride is a potent and selective histamine receptor H1 antagonist. Doxepin hydrochloride is also a potent CYP450 inhibitor and significantly inhibits CYP450 2C19 and 1A2 .

HY-12532S

Astemizole-d3
Astemizole-d₃ is the deuterium labeled Astemizole. Astemizole (R 43512), a second-generation antihistamine drug to diminish allergic symptoms with a long duration of action, is a histamine H1-receptor antagonist, with an IC₅₀ of 4 nM. Astemizole also shows potent hERG K+ channel blocking activity with an IC₅₀ of 0.9 nM. Astemizole has antipruritic effects .

HY-A0077S1

Perphenazine-d4
Perphenazine-d₄ is the deuterium labeled Perphenazine. Perphenazine is a typical antipsychotic agent, inhibits 5-HT2Areceptor, Alpha-1A adrenergic receptor, Dopamine receptor D2/D3, D2L receptor, and Histamine H1 receptor, with Ki values of 5.6, 10, 0.765/0.13, 3.4, and 8 nM, respectively.

HY-B0814S1

Levocetirizine-d4

Levocetirizine-d₄ ((R)-Cetirizine-d₄) is the deuterium-labeled Levocetirizine (HY-B0814) . Levocetirizine ((R)-Cetirizine) is a third-generation peripheral H1-receptor antagonist. Levocetirizine is an antihistaminic agent which is the R-enantiomer of Cetirizine. Levocetirizine has a higher affinity for the histamine H1-receptor than (S)-Cetirizine and can effectively treat allergic rhinitis and chronic idiopathic urticaria .

HY-141582S

Ceramide 3-d3

Ceramide 3-d₃ (N-Stearoyl phytosphingosine-d₃) is deuterium labeled Ceramide 3. Ceramide 3 is an orally active major component of intercellular lipids in the stratum corneum of the skin, and belongs to the ceramide family. Ceramide 3 inhibits c-jun and NF-κB activation induced by Histamine (HY-B1204), and suppresses the expression of IL-4 and TNF-α. Ceramide 3 inhibits scratching behavior and vascular permeability in mice, and exhibits antihistamine effects in guinea pig ileum. Ceramide 3 improves skin barrier function, reduces transepidermal water loss, erythema and the number of circulating epidermal cells, and accelerates barrier repair of irritated or dysfunctional skin.

HY-B1204S2

Histamine-13C5, 15N3

Histamine- ¹³C₅, ¹⁵N₃ (Ergamine- ¹³C₅, ¹⁵N₃) is the ¹³C and ¹⁵N labeled isotope of Histamine (HY-B1204). Histamine is the agonist for histamine receptor and a vasodilator. Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-B0548S1

Hydroxyzine D8
Hydroxyzine-d₈ is deuterium labeled Hydroxyzine. Hydroxyzine is a histamine H1-receptor antagonist .

HY-17042S

Cetirizine-d4
Cetirizine-d₄ is a deuterium labeled Cetirizine. Cetirizine, a second-generation antihistamine and the carboxylated metabolite of hydroxyzine, is a specific, orally active and long-acting histamine H1-receptor antagonist. Cetirizine marks antiallergic properties and inhibits eosinophil chemotaxis during the allergic response[1][2][3].

HY-B1296S

Promethazine-d6 hydrochloride
Promethazine-d₆ (hydrochloride) is the deuterium labeled Promethazine hydrochloride. Promethazine hydrochloride is an orally active histamine receptor antagonist .

HY-B1895S

Levodropropizine-d8
Levodropropizine-d₈ is deuterium labeled Levodropropizine. Levodropropizine (DF-526) is a histamine receptor inhibitor, Levodropropizine is an effective and very well tolerated peripheral antitussive agent.

HY-B0426AS

Olopatadine-d3 hydrochloride

Olopatadine-d₃ hydrochloride (ALO4943A-d₃) is the deuterium labeled Olopatadine hydrochloride. Olopatadine hydrochloride (ALO4943A; KW4679) is an orally active histamine H1 receptor antagonist and mast cell stabilizer. Olopatadine hydrochloride exerts antiallergic effects by blocking histamine H1 receptor-mediated activities. Olopatadine hydrochloride inhibits exocytosis, chemokine release, F-actin polymerization, CXCL10-induced calcium influx, and T cell chemotactic activity. Olopatadine hydrochloride also reduces the expression levels of CXCR3 on the surface of CD4 ⁺ and CD8 ⁺ T cells. Olopatadine hydrochloride inhibits scratching behavior, improves dermatitis scores, and suppresses intraepidermal neurite outgrowth. Olopatadine hydrochloride simultaneously decreases the levels of inflammatory markers, growth factors, histamine, and specific IgE, while increasing the expression of ErbB3A/HER3A. Olopatadine hydrochloride can be used in research related to seasonal pollinosis, chronic rhinitis, urticaria, allergic conjunctivitis, alopecia areata, and atopic dermatitis .

HY-B0377S

Famotidine-13C,d3
Famotidine- ¹³C,d₃ is the ¹³C- and deuterium labeled Famotidine. Famotidine (MK-208) is a competitive histamine H2-receptor antagonist. Its main pharmacodynamic effect is the inhibition of gastric secretion.

HY-W707517

Famotidine-d4
Famotidine-d₄ (MK-208-d₄) is deuterium labeled Famotidine. Famotidine (MK-208) is a competitive histamine H2-receptor antagonist. Its main pharmacodynamic effect is the inhibition of gastric secretion .

HY-B0548AS1

Hydroxyzine-d4' dihydrochloride
Hydroxyzine-d₄ (dihydrochloride) is the deuterium labeled Hydroxyzine dihydrochloride. Hydroxyzine dihydrochloride, a benzodiazepine antihistamine agent, acts as a orally active histamine?H1-receptor and serotonin antagonist. Hydroxyzine dihydrochloride has anxiolytic effect and can be used forthe research of generalised anxiety disorder .

HY-B0462AS

Azelastine-13C,d3
Azelastine- ¹³C,d₃ is deuterium labeled Azelastine. Azelastine, an antihistamine, is a potent and selective histamine 1 (H1) antagonist. Azelastine can be used for the research of allergic rhinitis, asthma, diabetic hyperlipidemic and SARS-CoV-2 .

HY-B0310S

Nizatidine-d3
Nizatidine-d₃ is the deuterium labeled Nizatidine. Nizatidine is a potent and orally active histamine H2 receptor antagonist, can be used for the research of stomach?and?intestines ulcers. Nizatidine works by decreasing the secretion of gastric?acid the stomach makes and prevent ulcers from coming back after they have healed in animal models .

HY-B0640S

Epinastine-13C,d3 hydrobromide
Epinastine- ¹³C,d₃ (hydrobromide) is the ¹³C- and deuterium labeled Epinastine. Epinastine (WAL801) is an antihistamine and mast cell stabilizer. Epinastine is a potent, selective and orally-active histamine H1 receptor antagonist. Epinastine also inhibits IL-8 release and has an antiallergic action .

HY-B1322AS

Amodiaquine-d10
Amodiaquine-d₁₀ is the deuterium labeled Amodiaquine. Amodiaquine (Amodiaquin), a 4-aminoquinoline class of antimalarial agent, is a potent and orally active histamine N-methyltransferase inhibitor. Amodiaquine is also a Nurr1 agonist and specifically binds to Nurr1-LBD (ligand binding domain) with an EC₅₀ of ~20 μM. Anti-inflammatory effect .

HY-N0349S

Methyl paraben-d4

Methyl paraben-d₄ is the deuterium labeled Methyl Paraben . Methyl Paraben, isolated from the barks of Tsuga dumosa the methyl ester of p-hydroxybenzoic acid, is a standardized chemical allergen. Methyl Paraben is a stable, non-volatile compound used as an antimicrobial preservative in foods, agents and cosmetics. The physiologic effect of Methyl Paraben is by means of increased histamine release, and cell-mediated immunity .

HY-B0352S3

Mirtazapine-d4 hydrochloride
Mirtazapine-d₄ hydrochloride is deuterated labeled Mirtazapine (HY-B0352). Mirtazapine (Org3770) is a potent and orally active noradrenergic and specific serotonergic antidepressant (NaSSA) agent. Mirtazapine is also a 5-HT₂, 5-HT₃, histamine H1 receptor and α2-adrenoceptor antagonist with pK_i values of 8.05, 8.1, 9.3 and 6.95, respectively .

HY-B2169S2

Melperone-d4 hydrochloride

Melperone-d₄ hydrochloride is the deuterium labeled Melperone hydrochloride (HY-103109) . Melperone hydrochloride is a butyrophenone with atypical antipsychotic properties. Melperone hydrochloride is a multireceptor antagonist with K_ds of 102 nM, 180 nM, 180 nM, and 150 nM for 5-HT2A, dopamine D2, α1-adrenergic, and α2-adrenergic receptors, respectively. Melperone hydrochloride has weak binding to histamine H1, 5-HT2C, 5-HT1A, 5-HT1D, and muscarinic receptors, with K_d values of 580 nM, 2100 nM, 2200 nM, 3400 nM, >10000 nM, respectively. Melperone hydrochloride is also a CYP2D6 inhibitor. Melperone hydrochloride can be used for the study of schizophrenia, and agitation in the elderly .

HY-B1204S4

Histamine-15N3

Histamine- ¹⁵N₃ is the ¹⁵N₃-labeled Histamine (HY-B1204). Histamine is the agonist for histamine receptor and a vasodilator. Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma .

HY-B1510S

Acrivastine D7
Acrivastine-d₇ is a deuterium labeled Acrivastine. Acrivastine is a short acting histamine 1 receptor antagonist.

HY-30234S

Clemizole-d4
Clemizole-d4 is a deuterium labeled Clemizole. Clemizole is an H1 histamine receptor antagonist, is found to substantially inhibit HCV replication .

HY-N8593S

Undecane-d24

Undecane-d₂₄ is the deuterium labeled Undecane (HY-N8593).Undecane is a potent cAMP agonist with anti-allergic and anti-inflammatory activities. Undecane inhibits degranulation and the secretion of histamine and TNF-α. Undecane reverses the increased levels of p38 phosphorylation, NF-κB transcriptional activity and target cytokine/chemokine genes, including thymus and activation-regulated chemokine (TARC), macrophage-derived chemokine (MDC) and interleukin-8 (IL-8). Undecane can be used for the study of skin inflammatory disorders, such as atopic dermatitis .

HY-17042AS1

Cetirizine-d8 dihydrochloride
Cetirizine-d₈ (dihydrochloride) is a deuterium labeled Cetirizine. Cetirizine, a second-generation antihistamine and the carboxylated metabolite of hydroxyzine, is a specific, orally active and long-acting histamine H1-receptor antagonist. Cetirizine marks antiallergic properties and inhibits eosinophil chemotaxis during the allergic response .

HY-10121S2

Asenapine-13C,d3
Asenapine- ¹³C,d₃ is ¹³C and deuterated labeled Asenapine (HY-10121). Asenapine (Org 5222), an atypical antipsychotic, is an antagonist of serotonin receptors (pK_i: 8.4-10.5), adrenoceptors (pK_i: 8.9-9.5), dopamine receptors (pK_i: 8.9-9.4) and histamine receptors (pK_i: 8.2-9.0). Asenapine can be used in the research of schizophrenia and bipolar disorder .

HY-W769200

Asenapine-13C,d3 maleate

Asenapine- ¹³C,d₃ Maleate is the deuterium labeled and ¹³C-Asenapine Maleate (HY-11100). Asenapine (Org 5222) Maleate, an atypical antipsychotic, is an antagonist of serotonin receptors (pK_i: 8.4-10.5), adrenoceptors (pK_i: 8.9-9.5), dopamine receptors (pK_i: 8.9-9.4) and histamine receptors (pK_i: 8.2-9.0). Asenapine Maleate can be used in the research of schizophrenia and bipolar disorder .

HY-B0281AS

Ranitidine-d6 hydrochloride

Ranitidine-d₆ hydrochloride is the deuterium labeled Ranitidine hydrochloride (HY-B0281A) . Ranitidine hydrochloride is a potent, selective and orally active histamine H2-receptor antagonist that inhibits gastric secretion. Ranitidine hydrochloride antagonizes Histamine (HY-B1204)-induced increases of the guinea-pig isolated rat atrium and Histamine-induced relaxations of the rat isolated uterine horn, with pA₂ values of 7.2 and 6.95, respectively. Ranitidine hydrochloride inhibits breast tumor development and spread in mice .

HY-B0693S

Ranitidine-d6

Ranitidine-d₆ is the deuterium labeled Ranitidine (HY-B0693). Ranitidine is a potent, selective and orally active histamine H2-receptor antagonist that inhibits gastric secretion. Ranitidine antagonizes Histamine (HY-B1204)-induced increases of the guinea-pig isolated rat atrium and Histamine-induced relaxations of the rat isolated uterine horn, with pA2 values of 7.2 and 6.95, respectively. Ranitidine inhibits breast tumor development and spread in mice .

HY-B2168S

Mequitazine-d8 hydrobromide
Mequitazine-d₈ hydrobromide is deuterated labeled Mequitazine (HY-B2168). Mequitazine is a potent, and long-acting histamine H₁ antagonist.

HY-A0027AS

Fenspiride-d5

Fenspiride-d₅ is the deuterium labeled Fenspiride. Fenspiride, an orally active non-steroidal antiinflammatory agent, is an antagonist of H1-histamine receptor. Fenspiride inhibites phosphodiesterase 3 (PDE3), phosphodiesterase 4 (PDE4) and phosphodiesterase 5 (PDE5) activities with -log IC₅₀ values of 3.44, 4.16 and approximately 3.8, respectively. Fenspiride can be used for the research of respiratory diseases .

HY-14447S

Bilastine-d6
Bilastine-d₆ is the deuterium labeled Bilastine. Bilastine is a selective histamine H1 receptor antagonist used for treatment of allergic rhinoconjunctivitis and urticaria .

HY-A0077S2

Perphenazine-d6 fumarate

Perphenazine-d6 (fumarate) is a deuterated labeled Perphenazine . Perphenazine is an orally active dopamine receptor and histamine-1 receptor antagonist, with K_i values of 0.56 nM (D2), 0.43 nM (D3), 6 nM (5-HT2A), respectively. Perphenazine also binds to Alpha-1A adrenergic receptor. Perphenazine inhibits cancer cell proliferation, and induces apoptosis. Perphenazine can be used in the research of mental disease, cancer, inflammation .

HY-B0548AS

Hydroxyzine-d4 dihydrochloride
Hydroxyzine-d₄ (dihydrochloride) is deuterium labeled Hydroxyzine. Hydroxyzine is a heterocyclic histamine H1-receptor antagonist. Hydroxyzine has anticholinergic, anxiolytic and analgesic properties .

HY-19489S1

(Rac)-Levomepromazine-d3 hydrochloride
(Rac)-Levomepromazine-d₃ (hydrochloride) is a labelled racemic Methotrimeprazine, which is a phenothiazine which has antagonist actions at multiple neurotransmitter receptor sites, including dopaminergic, cholinergic, serotonin and histamine receptors .

HY-B1589AS

Carbinoxamine-d6 maleate

Carbinoxamine-d₆ (maleate) is the deuterium labeled Carbinoxamine maleate salt. Carbinoxamine maleate salt is a blood-brain barrier-permeable histamine H1 receptor antagonist. Carbinoxamine maleate salt blocks the action of histamine on H1 receptors, reducing symptoms such as sneezing, rhinitis, rhinorrhea, erythema, pruritus and urticaria. Carbinoxamine maleate salt inhibits influenza virus entry into cells via endocytosis, targets the early stage of the viral life cycle, and simultaneously reduces viral replication levels in the lungs, alleviating pathological damage and inflammatory responses in lung tissues. Carbinoxamine maleate salt can be used in research on allergic rhinitis, influenza, etc.

HY-B0524AS

Betahistine-d3 dihydrochloride
Betahistine-d₃ (dihydrochloride) is the deuterium labeled Betahistine dihydrochloride. Betahistine dihydrochloride is an orally active histamine H1 receptor agonist and a H3 receptor antagonist . Betahistine dihydrochloride is used for the study of rheumatoid arthritis (RA) .

HY-12199S1

Pitolisant-d6
Pitolisant-d₆ (Tiprolisant-d₆) is deuterium labeled Pitolisant. Pitolisant is a potent and selective nonimidazole inverse agonist at the recombinant human histamine H3 receptor (K_i=0.16 nM).

HY-B1397S

Cyclizine-d3
Cyclizine-d₃ is deuterium labeled Cyclizine. Cyclizine, a piperazine-derivative, is a potent and selective histamine H1 receptor antagonist. Cyclizine can be used for the research of nausea, vomiting, and dizziness .

HY-12199S

Pitolisant-d10
Pitolisant-d₁₀ (Tiprolisant-d₁₀) is deuterium labeled Pitolisant. Pitolisant is a potent and selective nonimidazole inverse agonist at the recombinant human histamine H3 receptor (K_i=0.16 nM) .

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