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Results for "

H1 receptor antagonist

" in MedChemExpress (MCE) Product Catalog:

By Targets:	5-HT Receptor (51) Adrenergic Receptor (42) Akt (1) Amino Acid Derivatives (1) Amyloid-β (6) Angiotensin Receptor (1) Antibiotic (1) Apoptosis (25) Autophagy (10) Bacterial (11) Biochemical Assay Reagents (1) Calcium Channel (7) Caspase (3) CCR (1) COX (2) CXCR (6) Cytochrome P450 (13) Dopamine Receptor (29) Drug Derivative (1) Drug Intermediate (2) Drug Metabolite (10) Endogenous Metabolite (16) ERK (5) FAK (2) HBV (2) HCV (3) HCV Protease (2) Histamine Receptor (270) iGluR (5) IKK (4) Influenza Virus (6) Integrin (3) Interleukin Related (5) Isotope-Labeled Compounds (52) Keap1-Nrf2 (4) Leukotriene Receptor (1) Lipoxygenase (1) mAChR (20) Macrophage migration inhibitory factor (MIF) (1) mGluR (3) Mitophagy (5) MOFs (1) mTOR (4) Na+/Ca2+ Exchanger (3) Neurotensin Receptor (3) Opioid Receptor (5) P-glycoprotein (1) P2X Receptor (2) p38 MAPK (7) p62 (4) Parasite (1) PERK (2) Phosphodiesterase (PDE) (4) Potassium Channel (16) Pyroptosis (4) Reference Standards (81) Serotonin Transporter (4) Sodium Channel (4) TNF Receptor (1) Transmembrane Glycoprotein (4) TRP Channel (3) VEGFR (3)
By Research Areas:	Cancer (52) Cardiovascular Disease (20) Endocrinology (112) Infection (16) Inflammation/Immunology (192) Metabolic Disease (16) Neurological Disease (134)

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5-HT Receptor (51)

Adrenergic Receptor (42)

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Autophagy (10)

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CCR (1)

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CXCR (6)

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Histamine Receptor (270)

iGluR (5)

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Integrin (3)

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Isotope-Labeled Compounds (52)

Keap1-Nrf2 (4)

Leukotriene Receptor (1)

Lipoxygenase (1)

mAChR (20)

Macrophage migration inhibitory factor (MIF) (1)

mGluR (3)

Mitophagy (5)

MOFs (1)

mTOR (4)

Na+/Ca2+ Exchanger (3)

Neurotensin Receptor (3)

Opioid Receptor (5)

P-glycoprotein (1)

P2X Receptor (2)

p38 MAPK (7)

p62 (4)

Parasite (1)

PERK (2)

Phosphodiesterase (PDE) (4)

Potassium Channel (16)

Pyroptosis (4)

Reference Standards (81)

Serotonin Transporter (4)

Sodium Channel (4)

TNF Receptor (1)

Transmembrane Glycoprotein (4)

TRP Channel (3)

VEGFR (3)

By Research Areas:

Cancer (52)

Cardiovascular Disease (20)

Endocrinology (112)

Infection (16)

Inflammation/Immunology (192)

Metabolic Disease (16)

Neurological Disease (134)

315

Inhibitors & Agonists

Biochemical Assay Reagents

Natural
Products

Isotope-Labeled Compounds

Cat. No.	상품명	Target	연구분야	Chemical Structure

HY-17042

Cetirizine 3 Publications Verification	Histamine Receptor	Inflammation/Immunology Endocrinology
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-B0303

Diphenhydramine 5+ Cited Publications	Histamine Receptor Bacterial Endogenous Metabolite iGluR	Neurological Disease Inflammation/Immunology Cancer
Diphenhydramine is a first-generation histamine H1-receptor antagonist with anti-cholinergic effect. Diphenhydramine hydrochloride can across the ovine blood-brain barrier (BBB) .

HY-B1281

Mepyramine maleate 2 Publications Verification Pyrilamine maleate	Histamine Receptor	Neurological Disease Endocrinology
Mepyramine maleate, a first generation antihistamine, is an antagonist of histamine H1 receptor, with K_ds of 0.8 nM, 5200 nM and >3000 nM for H1, H2, and H3 receptor, respectively, and a pK_d of 9.4 for H1 receptor.

HY-B0286A

Chlorpheniramine maleate 4 Publications Verification Chlorphenamine maleate	Histamine Receptor	Inflammation/Immunology Endocrinology
Chlorpheniramine maleate is a histamine H1 receptor antagonist with an IC₅₀ of 12 nM .

HY-B0303A

Diphenhydramine hydrochloride 5+ Cited Publications	Histamine Receptor Endogenous Metabolite Bacterial Apoptosis	Inflammation/Immunology Endocrinology Cancer
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-B0801

Fexofenadine 5 Publications Verification MDL-16455; Terfenadine carboxylate	Histamine Receptor	Inflammation/Immunology Cancer
Fexofenadine (MDL-16455) is an orally active and nonsedative H1 receptor antagonist. Fexofenadine can be used in allergic rhinitis and chronic idiopathic urticarial research .

HY-B0781

Promethazine hydrochloride 1 Publications Verification	Histamine Receptor mAChR Adrenergic Receptor	Neurological Disease Endocrinology
Promethazine hydrochloride is an orally active phenothiazine derivative with antihistaminic (H1), sedative, antiemetic, anticholinergic, and antimotion sickness properties. Promethazine hydrochloride is a potent H1 receptor antagonist and a mAChR antagonist. It also has a certain affinity for 5-HT2A and 5-HT2C receptors .

HY-B0349

Meclizine dihydrochloride 4 Publications Verification Meclozine dihydrochloride	Histamine Receptor Apoptosis	Neurological Disease Endocrinology Cancer
Meclizine (Meclozine) dihydrochloride, an antihistamine, reversibly inhibits the interaction of histamine at the H1 receptors. Meclizine dihydrochloride is a member of the piperazine class of H1 antagonists. Meclizine dihydrochloride is an effective anti-motion sickness agent. Meclizine dihydrochloride crosses the blood-brain barrier. Meclizine dihydrochloride can be used for the research of polyQ toxicity disorders, such as Huntington's disease. Meclizine dihydrochloride is an agonist ligand for mouse *constitutive androstane receptor* (CAR)** and an inverse agonist for Human CAR .

HY-B0801A

Fexofenadine hydrochloride 5 Publications Verification MDL-16455 hydrochloride; Terfenadine carboxylate hydrochloride	Histamine Receptor	Inflammation/Immunology Cancer
Fexofenadine (MDL-16455) hydrochloride is an orally active and nonsedative H₁ receptor antagonist. Fexofenadine hydrochloride can be used in allergic rhinitis and chronic idiopathic urticarial research .

HY-17042A

Cetirizine dihydrochloride 3 Publications Verification P071	Histamine Receptor	Inflammation/Immunology Endocrinology Cancer
Cetirizine dihydrochloride, a second-generation antihistamine and the carboxylated metabolite of hydroxyzine, is a specific, orally active and long-acting histamine *H1-receptor* antagonist. Cetirizine dihydrochloride marks antiallergic properties and inhibits eosinophil chemotaxis during the allergic response .

HY-W010841

Levocetirizine dihydrochloride 2 Publications Verification (R)-Cetirizine dihydrochloride	Histamine Receptor	Inflammation/Immunology Endocrinology Cancer
Levocetirizine dihydrochloride ((R)-Cetirizine dihydrochloride) is a third-generation peripheral H1-receptor antagonist. Levocetirizine dihydrochloride is an antihistaminic agent which is the R-enantiomer of Cetirizine. Levocetirizine dihydrochloride has a higher affinity for the histamine H1-receptor than (S)-Cetirizine and can effectively treat allergic rhinitis and chronic idiopathic urticaria .

HY-B0524A

Betahistine dihydrochloride 2 Publications Verification	Histamine Receptor	Neurological Disease Inflammation/Immunology Endocrinology
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-14447

Bilastine	Histamine Receptor	Inflammation/Immunology Endocrinology
Bilastine is an oral histamine H1-receptor antagonist. Bilastine can be used for allergic rhinitis and urticaria studies, and it also improves diabetic nephropathy in mice, showing safety for the central nervous system .

HY-B0548

Hydroxyzine 1 Publications Verification	Histamine Receptor	Inflammation/Immunology Endocrinology
Hydroxyzine, a benzodiazepine antihistamine agent, acts as an orally active *histamine H1-receptor* and serotonin antagonist. Hydroxyzine has anxiolytic effect and can be used for the research of generalised anxiety disorder .

HY-B1303A

Mebhydrolin	Histamine Receptor	Inflammation/Immunology Endocrinology
Mebhydrolin is a specific histamine H₁ receptor antagonist.

HY-B0814

Levocetirizine 2 Publications Verification (R)-Cetirizine	Histamine Receptor	Inflammation/Immunology Endocrinology Cancer
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-B0548A

Hydroxyzine dihydrochloride 1 Publications Verification	Histamine Receptor	Inflammation/Immunology Endocrinology
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-14277A

Levocabastine hydrochloride R 50547 hydrochloride	Histamine Receptor Neurotensin Receptor Integrin	Inflammation/Immunology
Levocabastine (R 50547) hydrochloride is a potent and selective histamine H1-receptor antagonist. Levocabastine hydrochloride is also a selective, high affinity *neurotensin receptor* subtype 2 (NTR2)** antagonist, with a K_i of 17 nM for mNTR2. Levocabastine hydrochloride can act as a VLA-4 antagonist, interferes with conjunctival eosinophil infiltration in allergic conjunctivitis (AC) .

HY-B1303

Mebhydrolin napadisylate Mebhydroline 1,5-naphthalenedisulfonate salt	Histamine Receptor	Inflammation/Immunology Endocrinology
Mebhydrolin napadisylate is a specific histamine H₁ receptor antagonist.

HY-B0524

Betahistine 2 Publications Verification	Histamine Receptor	Inflammation/Immunology Cancer
Betahistine is an orally active histamine H1 receptor agonist and a H3 receptor antagonist . Betahistine is used for the study of rheumatoid arthritis (RA) .

HY-B0895

Hydroxyzine pamoate	Histamine Receptor	Inflammation/Immunology Endocrinology
Hydroxyzine pamoate is a histamine receptor H1 antagonist, one of the salt forms of Hydroxyzine, soluble in dimethyl formamide and chloroform but insoluble in water and alcohol .

HY-B1397

Cyclizine	Histamine Receptor	Neurological Disease
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-B1305

Chloropyramine hydrochloride	FAK Histamine Receptor VEGFR	Endocrinology Cancer
Chloropyramine hydrochloride is a *histamine receptor* H1** antagonist which can also inhibit the biochemical function of VEGFR-3 and FAK.

HY-17039

Alcaftadine 1 Publications Verification R89674	Histamine Receptor	Inflammation/Immunology Endocrinology
Alcaftadine (R89674) is a histamine H1 receptor antagonist, which is used to prevent eye irritation brought on by allergic conjunctivitis. Alcaftadine is a broad-spectrum antihistamine displaying a high affinity for histamine H1 and H2 receptors and a lower affinity for H4 receptors. Alcaftadine also exhibits modulatory action on immune cell recruitment and mast cell stabilizing effects .

HY-B0303AS

Diphenhydramine-d6 hydrochloride	Isotope-Labeled Compounds Histamine Receptor Endogenous Metabolite	Inflammation/Immunology Endocrinology
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-105014

Tecastemizole Norastemizole	Histamine Receptor	Inflammation/Immunology
Tecastemizole (Norastemizole), a major metabolite of Astemizole, is a potent and selective H1 receptor antagonist. Tecastemizole shows anti-inflammatory activities .

HY-B0286AR

Chlorpheniramine maleate (Standard) Chlorphenamine maleate (Standard)	Reference Standards Histamine Receptor	Inflammation/Immunology Endocrinology
Chlorpheniramine (maleate) (Standard) is the analytical standard of Chlorpheniramine (maleate). This product is intended for research and analytical applications. Chlorpheniramine maleate is a histamine H1 receptor antagonist with an IC₅₀ of 12 nM .

HY-U00084

SUN 1334H	Histamine Receptor	Inflammation/Immunology Endocrinology
SUN 1334H is a potent, orally active, highly selective H1 receptor antagonist, with K_i of 9.7 nM.

HY-A0075

Decloxizine dihydrochloride 1 Publications Verification UCB 1402 dihydrochloride; NSC289116 dihydrochloride	Histamine Receptor 5-HT Receptor	Inflammation/Immunology
Decloxizine (UCB-1402; NSC289116) dihydrochloride is an orally active bronchodilator that can penetrate the blood-brain barrier. Decloxizine dihydrochloride is a piperazine-type H₁ histamine receptor antagonist. Decloxizine dihydrochloride selectively blocks H1 histamine receptors, inhibiting histamine-induced capillary dilation, edema, and itching. Decloxizine dihydrochloride has some 5-HT₂ receptor antagonistic activity. Decloxizine dihydrochloride can be used in studies of urticaria, allergic rhinitis, and bronchial asthma .

HY-B0303AS1

Diphenhydramine-d5 hydrochloride	Histamine Receptor Endogenous Metabolite	Inflammation/Immunology Endocrinology
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-119832B

(S)-Setastine (S)-EGIS-2062 free acid; (S)-EGYT-2062 free acid	Histamine Receptor	Inflammation/Immunology
(S)-Setastine ((S)-EGIS-2062 free acid) is a non-sedating, highly potent antagonist of H1 receptor-mediated responses. (S)-Setastine has a long-lasting antihistamine effect and good oral efficacy. (S)-Setastine can be used in the research of allergic diseases .

HY-B1067A

Antazoline Phenazoline	Histamine Receptor	Neurological Disease Endocrinology
Antazoline (Phenazoline) is a histamine H1 receptor antagonist with anticholinergic and antiviral properties. Antazoline can prevent histamine from acting on target cells through a reversible competition effect on histamine receptor sites of these cells. Antazoline can exert an antiallegic effect and prevent the occurrence of physiological reactions from the effect of blocking as well as inhibiting H1 receptor. Antazoline can effectively reduce HBV DNA in the extracellular supernatant in a dose-dependent manner, with EC₅₀ of 2.910 μmol/L in HepAD38 cells. Antazoline also has a significant inhibitory effect on HBV DNA in the extracellular supernatant of Huh7 cells (EC₅₀ = 2.349 μmol/L). Antazoline has anti-arrhythmic effect in acute myocardial infarctions. Antazoline can be studied in research for cardiovascular diseases, and HBV .

HY-W010841R

Levocetirizine dihydrochloride (Standard) (R)-Cetirizine dihydrochloride (Standard)	Reference Standards Histamine Receptor	Inflammation/Immunology Endocrinology
Levocetirizine (dihydrochloride) (Standard) is the analytical standard of Levocetirizine (dihydrochloride). This product is intended for research and analytical applications. Levocetirizine dihydrochloride ((R)-Cetirizine dihydrochloride) is a third-generation peripheral H1-receptor antagonist. Levocetirizine dihydrochloride is an antihistaminic agent which is the R-enantiomer of Cetirizine. Levocetirizine dihydrochloride has a higher affinity for the histamine H1-receptor than (S)-Cetirizine and can effectively treat allergic rhinitis and chronic idiopathic urticaria .

HY-D0237

Betahistine mesylate 2 Publications Verification	Histamine Receptor	Inflammation/Immunology
Betahistine mesylate is an orally active histamine H1 receptor agonist and a H3 receptor antagonist . Betahistine mesylate is used for the study of rheumatoid arthritis (RA) .

HY-402545

(-)-Brompheniramine (R)-Brompheniramine	Histamine Receptor	Inflammation/Immunology
(-)-Brompheniramine is a H1 receptor antagonist with antiallergic activity .

HY-B0539S3

Desloratadine-d5 Sch34117-d₅	Isotope-Labeled Compounds Histamine Receptor Endogenous Metabolite	Inflammation/Immunology Endocrinology
Desloratadine-d₅ is deuterium labeled Desloratadine. Desloratadine (Sch34117) is the orally active major metabolite of the nonsedating H1-antihistamine Loratadine. Desloratadine is a selective H1-receptor antagonist that has anti-allergic and anti-inflammatory activities .

HY-B0814R

Levocetirizine (Standard) (R)-Cetirizine (Standard)	Histamine Receptor Reference Standards	Inflammation/Immunology Endocrinology Cancer
Levocetirizine (Standard) is the analytical standard of Levocetirizine. This product is intended for research and analytical applications. 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-A0178

Isothipendyl AY 56012	Histamine Receptor Endogenous Metabolite	Inflammation/Immunology
Isothipendyl (AY 56012), an azaphenothiazine derivative, is a potent histamine 1 (H1) receptor antagonist. Isothipendyl is a primary metabolite .

HY-B0814S1

Levocetirizine-d4 (R)-Cetirizine-d₄	Isotope-Labeled Compounds	Inflammation/Immunology
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-122508

Hydroxyebastine	Drug Metabolite	Neurological Disease
Hydroxyebastine is an Ebastine (HY-B0674) (a histamine H₁-receptor antagonist) metabolite. Hydroxyebastine is metabolized to Carebastine (HY-121356) by CYP2J2 and CYP3A4 .

HY-117501

Dexchlorpheniramine	Histamine Receptor	Inflammation/Immunology Cancer
Dexchlorpheniramine is an potent and blood-brain barrier (BBB) penetrant histamine 1 (H1) receptor antagonist with anticholinergic properties. Dexchlorpheniramine can be used for researching allergies .

HY-B1397B

Cyclizine lactate	Histamine Receptor	Neurological Disease
Cyclizine lactate, a piperazine-derivative, is a potent and selective histamine H1 receptor antagonist. Cyclizine lactate can be used for the research of nausea, vomiting, and dizziness .

HY-B0349A

Meclizine Meclozine	Histamine Receptor Apoptosis	Neurological Disease Inflammation/Immunology
Meclizine (Meclozine), an antihistamine, reversibly inhibits the interaction of histamine at the H1 receptors. Meclizine is a member of the piperazine class of H1 antagonists. Meclizine is an effective anti-motion sickness agent. Meclizine crosses the blood–brain barrier. Meclizine is an agonist ligand for mouse *constitutive androstane receptor* (CAR)** and an inverse agonist for Human CAR. Meclizine can be used for the research of polyQ toxicity disorders, such as Huntington's disease .

HY-14277

Levocabastine R 50547	Histamine Receptor Neurotensin Receptor Integrin	Inflammation/Immunology
Levocabastine (R 50547) is a potent and selective histamine H1-receptor antagonist. Levocabastine hydrochloride is also a selective, high affinity *neurotensin receptor* subtype 2 (NTR2)** antagonist, with a K_i of 17 nM for mNTR2. Levocabastine can act as a VLA-4 antagonist, interferes with conjunctival eosinophil infiltration in allergic conjunctivitis (AC) .

HY-B1281R

Mepyramine maleate (Standard) Pyrilamine maleate (Standard)	Reference Standards Histamine Receptor	Neurological Disease Endocrinology
Mepyramine maleate (Standard) is the analytical standard of Mepyramine maleate. This product is intended for research and analytical applications. Mepyramine maleate, a first generation antihistamine, is an antagonist of histamine H1 receptor, with Kds of 0.8 nM, 5200 nM and >3000 nM for H1, H2, and H3 receptor, respectively, and a pKd of 9.4 for H1 receptor.

HY-14145

NBI-75043	Histamine Receptor	Others
NBI-75043 is an antagonist of H1 receptor .

HY-B0548S1

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

HY-101830

Wy 49051	Histamine Receptor	Inflammation/Immunology Endocrinology
Wy 49051 is a potent, orally active H1 receptor antagonist, with IC₅₀ of 44 nM.

HY-105542

Niaprazine	Histamine Receptor	Neurological Disease
Niaprazine is a histamine H1-receptor antagonist. Niaprazine has antihistamine and antiserotonin activities and can be used for sleep disorder research .

HY-W660701

Bamipine	Histamine Receptor Bacterial	Infection Neurological Disease
Bamipine is a potent histamine H1-receptor antagonist. Bamipine exhibits moderate activity against Mycobacterium tuberculosis. Bamipine has a mild sedative effect .

Cat. No.	상품명	Category	Target	Chemical Structure

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 Maximum Cited Publications 13 Publications Verification Sch34117	Structural Classification Natural Products 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-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-A0019

Paliperidone 3 Publications Verification 9-Hydroxyrisperidone	Natural Products Endogenous metabolite Source Classification	Drug Metabolite Dopamine Receptor 5-HT Receptor Adrenergic Receptor
Paliperidone (9-Hydroxyrisperidone), the major active metabolite of Risperidone, is a dopamine D2 antagonist and 5-HT2A antagonist. Paliperidone is also active as an antagonist at α1 and α2 adrenergic receptors and *H1-histaminergic* receptors. Paliperidone, a antipsychotic agent, shows efficacy against schizophrenia .

HY-B0188A

Mianserin hydrochloride 1 Publications Verification Org GB 94	Alkaloids Structural Classification Neurological Disease Classification of Application Fields Leguminosae Other Alkaloids Crotalaria pallida Ait. Plants Disease Research Fields Endocrinology Source Classification	Histamine Receptor Opioid Receptor ERK p38 MAPK
Mianserin hydrochloride (Org GB 94) is an orally active H1 receptor antagonist. Mianserin hydrochloride can activate κ-opioid receptor and octopamine receptor. Mianserin hydrochloride increases ERK1/2 and CREB phosphorylation, and antagonizes full κ-opioid agonist and Dynorphin A (HY-P1333)-induced MAPK phosphorylation. Mianserin hydrochloride modulates social and exploratory behaviour, raises electroconvulsive thresholds. Mianserin hydrochloride can be used for the research of neurological disease, such as depression and epilepsy .

HY-12882A

Ifenprodil tartrate 5+ Cited Publications NP-120 tartrate; RC-61-91 tartrate	Alkaloids Piperidine Alkaloids Neurological Disease Classification of Application Fields Crassulaceae Sedum sarmentosum Bunge Plants Disease Research Fields Source Classification	iGluR Adrenergic Receptor Potassium Channel Calcium Channel Influenza Virus
Ifenprodil (NP-120) tartrate, a cerebral vasodilator, is a noncompetitive NMDA receptor antagonist. Ifenprodil tartrate exerts high affinity at NR1A/NR2B receptors (IC₅₀=0.34 μM) over 400-fold than at NR1A/NR2A receptors (IC₅₀=146 μM) . Ifenprodil tartrate is an α1 adrenergic receptor antagonist. Ifenprodil tartrate inhibits GIRK (Kir3), reduces inward currents through the basal GIRK activity. Ifenprodil tartrate has reliable inhibitory effects against A/H1N1 strains (EC₅₀ of 6.6 µM). Ifenprodil tartrate has neuroprotective, anticonvulsant and antinociceptive effects. Ifenprodil tartrate can be used for the study of cerebrovascular diseases and peripheral arterial obliterative disease .

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-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-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-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-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-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-B0188AR

Mianserin hydrochloride (Standard) Org GB 94 (Standard)	Alkaloids Structural Classification Leguminosae Other Alkaloids Crotalaria pallida Ait. Plants Source Classification	Reference Standards Histamine Receptor Opioid Receptor ERK p38 MAPK
Mianserin hydrochloride (Org GB 94) (Standard) is the analytical standard of Mianserin hydrochloride. This product is intended for research and analytical applications. Mianserin hydrochloride is an orally active H1 receptor antagonist. Mianserin hydrochloride can activate κ-opioid receptor and octopamine receptor. Mianserin hydrochloride increases ERK1/2 and CREB phosphorylation, and antagonizes full κ-opioid agonist and Dynorphin A (HY-P1333)-induced MAPK phosphorylation. Mianserin hydrochloride modulates social and exploratory behaviour, raises electroconvulsive thresholds. Mianserin hydrochloride can be used for the research of neurological disease, such as depression and epilepsy .

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-B0539R

Desloratadine (Standard) Sch34117 (Standard)	Structural Classification Natural Products Classification of Application Fields Endogenous metabolite Disease Research Fields Endocrinology Source Classification	Histamine Receptor Endogenous Metabolite Drug Metabolite Reference Standards
Desloratadine (Standard) is the analytical standard of Desloratadine. This product is intended for research and analytical applications. Desloratadine (Sch34117) is the orally active major metabolite of the nonsedating *H1-antihistamine* Loratadine. Desloratadine is a selective *H1-receptor* antagonist that has anti-allergic and anti-inflammatory activities .

HY-N6772R

Cytochalasin E (Standard)	Alkaloids Structural Classification Microorganisms Pyrrole Alkaloids Source Classification	Reference Standards Autophagy
Antazoline (phosphate) (Standard) is the analytical standard of Antazoline (phosphate). This product is intended for research and analytical applications. Antazoline phosphate is an H1 receptor antagonist that affects the activity of the central nervous system, has a potent antiarrhythmic effect .

HY-17042R

Cetirizine (Standard)	Structural Classification Ketones, Aldehydes, Acids Endogenous metabolite Source Classification	Reference Standards Histamine Receptor
Cetirizine (Standard) is the analytical standard of Cetirizine. This product is intended for research and analytical applications. 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-A0019R

Paliperidone (Standard) 9-Hydroxyrisperidone (Standard)	Structural Classification Natural Products Endogenous metabolite Source Classification	Drug Metabolite Reference Standards Dopamine Receptor 5-HT Receptor Adrenergic Receptor
Paliperidone (Standard) is the analytical standard of Paliperidone. This product is intended for research and analytical applications. Paliperidone (9-Hydroxyrisperidone), the major active metabolite of Risperidone, is a dopamine D2 antagonist and 5-HT2A antagonist. Paliperidone is also active as an antagonist at α1 and α2 adrenergic receptors and *H1-histaminergic* receptors. Paliperidone, a antipsychotic agent, shows efficacy against schizophrenia .

HY-N1514R

Ganoderenic acid B (Standard)	Triterpenes Structural Classification Human Gut Microbiota Metabolites Microorganisms Terpenoids Polyporaceae Ganoderma lucidum (Leyss. Ex Fr.) Karst. Plants Endogenous metabolite Source Classification	Reference Standards P-glycoprotein
Doxylamine (succinate) (Standard) is the analytical standard of Doxylamine (succinate). This product is intended for research and analytical applications. Doxylamine (succinate), a first generation antihistamine, is a histamine (H1) receptor antagonist. Doxylamine is also a local analgesic agent and effective hypnotic agent .

HY-17428A

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

HY-17428B

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

HY-N7814R

2-Hydroxypalmitic acid (Standard)	Structural Classification Microorganisms Ketones, Aldehydes, Acids Source Classification	Reference Standards Endogenous Metabolite
Pheniramine (maleate) (Standard) is the analytical standard of Pheniramine (maleate). This product is intended for research and analytical applications. Pheniramine (Prophenpyridamine; Tripoton) maleate is a first-generation histamine H1 receptor antagonist, acts on the central nervous system (CNS) with sedative and hypnotic effect. Pheniramine maleate displays antitumor effect and induces leukemia cells apoptosis. Pheniramine maleate is also a safe and effective local agent that can suppress or relieve pain, with antipruritic effects .

HY-17428R

Tripelennamine hydrochloride (Standard)	Structural Classification Alkaloids Pyridine Alkaloids Endogenous metabolite Source Classification	Reference Standards Histamine Receptor
Tripelennamine hydrochloride (Standard) is the analytical standard of Tripelennamine hydrochloride (HY-17428). This product is intended for research and analytical applications. 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 .

Cat. No.	상품명	Chemical Structure

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-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-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-B0781S

Promethazine-d4 hydrochloride
Promethazine-d₄ (hydrochloride) is the deuterium labeled Promethazine hydrochloride. Promethazine hydrochloride is the first-generation antihistamine; strong antagonist of the H1 receptor and moderate mACh receptor antagonist, moderate affinity for 5-HT2A, 5-HT2C, D2 and α1-adrenergic receptors.

HY-14541S

Olanzapine-d3
Olanzapine-d₃ (LY170053-d₃) is the deuterium labeled Olanzapine. Olanzapine is a selective, orally active monoaminergic antagonist with high affinity binding to serotonin H1, 5HT2A/2C, 5HT3, 5HT6 (Ki=7, 4, 11, 57, and 5 nM, respectively), dopamine D1-4 (Ki=11 to 31 nM), muscarinic M1-5 (Ki=1.9-25 nM), and adrenergic α1 receptors (Ki=19 nM). Olanzapine is an atypical antipsychotic .

HY-B0539S3

Desloratadine-d5
Desloratadine-d₅ is deuterium labeled Desloratadine. Desloratadine (Sch34117) is the orally active major metabolite of the nonsedating H1-antihistamine Loratadine. Desloratadine is a selective H1-receptor antagonist that has anti-allergic and anti-inflammatory activities .

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-A0019S

Paliperidone-d4
Paliperidone-d₄ is the deuterium labeled Paliperidone. Paliperidone (9-Hydroxyrisperidone), the major active metabolite of Risperidone, is a dopamine D2 antagonist and 5-HT2A antagonist. Paliperidone is also active as an antagonist at α1 and α2 adrenergic receptors and H1-histaminergic receptors. Paliperidone, a antipsychotic agent, shows efficacy against schizophrenia .

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-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-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-B0188S

Mianserin-d3

Mianserin-d3 is the deuterium labeled Mianserin (HY-B0188). Mianserin (Mianserine) is an orally active H1 receptor antagonist. Mianserin can activate κ-opioid receptor and octopamine receptor. Mianserin increases ERK1/2 and CREB phosphorylation, and antagonizes full κ-opioid agonist and Dynorphin A (HY-P1333)-induced MAPK phosphorylation. Mianserin modulates social and exploratory behaviour, raises electroconvulsive thresholds. Mianserin can be used for the research of neurological disease, such as depression and epilepsy .

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-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-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-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-B0188AS

Mianserin-d3 hydrochloride

Mianserin-d₃ hydrochloride is the deuterium labeled Mianserin. Mianserin (Mianserine) is an orally active H1 receptor antagonist. Mianserin can activate κ-opioid receptor and octopamine receptor. Mianserin increases ERK1/2 and CREB phosphorylation, and antagonizes full κ-opioid agonist and Dynorphin A (HY-P1333)-induced MAPK phosphorylation. Mianserin modulates social and exploratory behaviour, raises electroconvulsive thresholds. Mianserin can be used for the research of neurological disease, such as depression and epilepsy .

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-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-B0539S1

Desloratadine-d9
Desloratadine-d₉ is the deuterium labeled Desloratadine. Desloratadine (Sch34117) is the orally active major metabolite of the nonsedating H1-antihistamine Loratadine. Desloratadine is a selective H1-receptor antagonist that has anti-allergic and anti-inflammatory activities .

HY-B0539S

Desloratadine-d4
Desloratadine-d₄ is the deuterium labeled Desloratadine. Desloratadine (Sch34117) is the orally active major metabolite of the nonsedating H1-antihistamine Loratadine. Desloratadine is a selective H1-receptor antagonist that has anti-allergic and anti-inflammatory activities[1][2].

HY-B0539S4

Desloratadine-d4 hydrobromide
Desloratadine-d₄ hydrobromide is deuterated labeled Desloratadine (HY-B0539). Desloratadine (Sch34117) is the orally active major metabolite of the nonsedating *H1-antihistamine* Loratadine. Desloratadine is a selective *H1-receptor* antagonist that has anti-allergic and anti-inflammatory activities .

HY-B0814S

Levocetirizine-d4 dihydrochloride

Levocetirizine-d₄ (dihydrochloride) is the deuterium labeled Levocetirizine. 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[1].

HY-B0539S2

Desloratadine-3,3,5,5-d4
Desloratadine-3,3,5,5-d₄ is the deuterium labeled Desloratadine. Desloratadine (Sch34117) is the orally active major metabolite of the nonsedating H1-antihistamine Loratadine. Desloratadine is a selective H1-receptor antagonist that has anti-allergic and anti-inflammatory activities[1][2].

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-B0781S1

Promethazine-d3 hydrochloride

Promethazine-d₃ (hydrochloride) is deuterium labeled Promethazine (hydrochloride). Promethazine hydrochloride is an orally active phenothiazine derivative with antihistaminic (H1), sedative, antiemetic, anticholinergic, and antimotion sickness properties. Promethazine hydrochloride is a potent H1 receptor antagonist and a mAChR antagonist. It also has a certain affinity for 5-HT2A and 5-HT2C receptors .

HY-B1296S1

Promethazine-d4
Promethazine-d4 is a deuterated-labeled promethazine (HY-B0781). Promethazine is an orally active H1 receptor and mAChR antagonist with antihistamine (H1), sedative, antiemetic, anticholinergic, and anti-motion sickness properties .

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-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-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-14447S1

Bilastine-d4
Bilastine-d₄ is deuterium labeled Bilastine. Bilastine is an oral histamine H1-receptor antagonist. Bilastine can be used for allergic rhinitis and urticaria studies, and it also improves diabetic nephropathy in mice, showing safety for the central nervous system .

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-B0524AS1

Betahistine-13C,d3 dihydrochloride
Betahistine- ¹³C,d₃ (dihydrochloride) is the ¹³C- and 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-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-17042AS

Cetirizine-d4 dihydrochloride
Cetirizine-d₄ (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-B0349S

Meclizine-d8
Meclizine-d₈ is a deuterium labeled Meclizine. Meclizine is a histamine H1 receptor antagonist and has the potential to treat nausea and motion sickness. Meclizine is an agonist ligand for mouse constitutive androstane receptor (CAR) and an inverse agonist for Human CAR .

HY-B0548AS2

Hydroxyzine-d8 dihydrochloride
Hydroxyzine-d₈ (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-B0801S2

Fexofenadine-d3
Fexofenadine-d₃ is the deuterium labeled Fexofenadine . Fexofenadine (MDL-16455) is an orally active and nonsedative H1 receptor antagonist. Fexofenadine can be used in allergic rhinitis and chronic idiopathic urticarial research .

HY-B0298AS

Clemastine-d5 fumarate

1 Publications Verification

Clemastine (HS-592; Meclastine)-d₅ fumarate is the deuterium labeled Clemastine fumarate. Clemastine fumarate is an orally active, blood-brain barrier-permeable H1 histamine receptor (H1 histamine receptor) antagonist with potent antiallergic effects. Clemastine fumarate also antagonizes muscarinic acetylcholine receptors (mAChR), particularly the M1 and M4 subtypes. In addition to antihistamine effects, Clemastine fumarate exhibits multiple pharmacological activities, especially in promoting central nervous system remyelination, activating autophagy and pyroptosis, exerting anti-apoptotic and neuroprotective effects, and suppressing inflammation .

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-B0674S

Ebastine-d5
Ebastine-d₅ is the deuterium labeled Ebastine. Ebastine (LAS-W 090) is an orally active, second-generation histamine H1 receptor antagonist. Ebastine can be used for the symptoms of allergic rhinitis and chronic idiopathic urticaria research .

HY-B0674S1

Ebastine-d6
Ebastine-d₆ is deuterated labeled Ebastine (HY-B0674). Ebastine (LAS-W 090) is an orally active, second-generation histamine H1 receptor antagonist. Ebastine can be used for the symptoms of allergic rhinitis and chronic idiopathic urticaria research .

HY-B0801S4

Fexofenadine-d3-1
Fexofenadine-d₃-1 fumarate is deuterated labeled Fexofenadine (HY-B0801). Fexofenadine (MDL-16455) is an orally active and nonsedative H1 receptor antagonist. Fexofenadine can be used in allergic rhinitis and chronic idiopathic urticarial research .

HY-B1794S

Thiethylperazine-d3
Thiethylperazine-d₃ is the deuterium labeled Thiethylperazinee (HY-B1794). Thiethylperazine, a phenothiazine derivate, is an orally active and potent dopamine D2-receptor and histamine H1-receptor antagonist. Thiethylperazine is also a selective ABCC1activator that reduces amyloid-β (Aβ) load in mice. Thiethylperazine has anti-emetic, antipsychotic and antimicrobial effects .

HY-12752BS

Alimemazine-d6 hydrochloride

Alimemazine-d6 hydrochloride (Trimeprazine-d6 hydrochloride) is the deuterium labeled Alimemazine (HY-12752). Alimemazine is a phenothiazine derivative that is generally used as an antipruritic agent and also a hemagglutinin (HA)-receptor antagonist.Alimemazine (Trimeprazine) is also acts as a partial agonist against the histamine H1 receptor (H1R) and other GPCRs. Alimemazine displays antiserotonin, antispasmodic, and antiemetic properties .

HY-121356S

Carebastine-d5
Carebastine-d₅ is the deuterium labeled Carebastine. Carebastine is the active metabolite of Ebastine. Carebastine is a histamine H1 receptor antagonist. Carebastine inhibits VEGF-induced HUVEC and HPAEC proliferation, migration and angiogenesis in a dose-dependent manner . Carebastine suppresses the expression of macrophage migration inhibitory factor .

HY-121356S1

Carebastine-d5 Methyl Ester
Carebastine-d₅ Methyl Ester is the deuterium labeled Carebastine. Carebastine is the active metabolite of Ebastine. Carebastine is a histamine H1 receptor antagonist. Carebastine inhibits VEGF-induced HUVEC and HPAEC proliferation, migration and angiogenesis in a dose-dependent manner . Carebastine suppresses the expression of macrophage migration inhibitory factor .

HY-108411S

Emedastine-13C,d3 fumarate
Emedastine- ¹³C,d₃ fumarate is the ¹³C- and deuterium labeled Emedastine. Emedastine is an orally active, selective and high affinity histamine H1 receptor antagonist with a K_i value of 1.3 nM. Emedastine is a benzimidazole derivative with potent antiallergic properties and used for allergic rhinitis, allergic skin diseases and allergic conjunctivitis .

HY-A0015S

Bepotastine-d6 besylate
Bepotastine-d₆(besylate) is deuterium labeled Bepotastine (besilate). Bepotastine besilate is a selective and orally active second-generation histamine H1 receptor antagonist, can suppress the expression of nerve growth factor (NGF). Bepotastine besilate has the potential for allergic rhinitis, allergic conjunctivitis and urticaria/pruritus research .

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