2. Signaling Pathways
  3. GPCR/G Protein
    Immunology/Inflammation
    Neuronal Signaling
  4. Histamine Receptor

Histamine Receptor

Histamine Receptor

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Histamine Receptors are a class of G protein-coupled receptors with histamine as their endogenous ligand. There are four known histamine receptors: H1 receptor, H2 receptor, H3 receptor, H4 receptor. The H1 receptor is a histamine receptor belonging to the family of Rhodopsin-like G-protein-coupled receptors. This receptor, which is activated by the biogenic amine histamine, is expressed throughout the body, to be specific, in smooth muscles, on vascular endothelial cells, in the heart, and in the central nervous system. H2 receptors are positively coupled to adenylate cyclase via Gs. It is a potent stimulant of cAMP production, which leads to activation of Protein Kinase A. Histamine H3 receptors are expressed in the central nervous system and to a lesser extent the peripheral nervous system, where they act asautoreceptors in presynaptic histaminergic neurons, and also control histamine turnover by feedback inhibition of histamine synthesis and release. The Histamine H4 receptor has been shown to be involved in mediating eosinophil shape change and mast cell chemotaxis.

Histamine Receptor Isoform Specific Products:

Histamine Receptor Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-B1483
    Methapyrilene hydrochloride
    		Inhibitor 99.88%
    Methapyrilene (Thenylpyramine) hydrochloride is an orally active H1-receptor antihistamine and an anticholinergic agent of the pyridine chemical class. Methapyrilene hydrochloride has hepatotoxicity and can be used as a hepatotoxin that cause periportal hepatic necrosis in vivo
    Methapyrilene hydrochloride
  • HY-14537
    Latrepirdine dihydrochloride
    		Antagonist 99.65%
    Latrepirdine dihydrochloride is a neuroactive compound with antagonist activity at histaminergic, α-adrenergic, and serotonergic receptors. Latrepirdine stimulates amyloid precursor protein (APP) catabolism and amyloid-β (Aβ) secretion.
    Latrepirdine dihydrochloride
  • HY-B0303AS
    Diphenhydramine-d6 hydrochloride
    		Antagonist 99.30%
    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).
    Diphenhydramine-d<sub>6</sub> hydrochloride
  • HY-16567
    Asenapine hydrochloride
    		Antagonist 99.95%
    Asenapine (Org 5222) hydrochloride, an atypical antipsychotic, is an antagonist of serotonin receptors (pKi: 8.4-10.5), adrenoceptors (pKi: 8.9-9.5), dopamine receptors (pKi: 8.9-9.4) and histamine receptors (pKi: 8.2-9.0). Asenapine hydrochloride can be used in the research of schizophrenia and bipolar disorderr.
    Asenapine hydrochloride
  • HY-W014941
    (R)-(-)-α-Methylhistamine dihydrochloride
    		Agonist 99.76%
    (R)-(-)-α-Methylhistamine dihydrochloride is a potent, selective and brain-penetrant agonist of H3 histamine receptor, with a Kd of 50.3 nM. (R)-(-)-α-Methylhistamine dihydrochloride can enhance memory retention, attenuates memory impairment in rats.
    (R)-(-)-α-Methylhistamine dihydrochloride
  • HY-B1478
    Dimaprit dihydrochloride
    		Agonist 98.70%
    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.
    Dimaprit dihydrochloride
  • HY-B0538A
    Pemirolast potassium
    		Antagonist 99.99%
    Pemirolast potassium is an orally active antiallergic agent. Pemirolast potassium attenuates Paclitaxel (HY-B0015) hypersensitivity reactions. Pemirolast potassium can be used for bronchial asthma and conjunctivitis research-.
    Pemirolast potassium
  • HY-107568
    Iodophenpropit dihydrobromide
    		Antagonist 99.70%
    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 (KD 0.32 nM).
    Iodophenpropit dihydrobromide
  • HY-16289
    Lodoxamide tromethamine
    		Inhibitor 99.83%
    Lodoxamide tromethamine (U-42585E) is a medication for the treatment of prophylaxis of mast cell-mediated allergic disease.
    Lodoxamide tromethamine
  • HY-B1204R
    Histamine (Standard)
    		Agonist
    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.
    Histamine (Standard)
  • HY-B0895
    Hydroxyzine pamoate
    		Antagonist 99.85%
    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.
    Hydroxyzine pamoate
  • HY-15289
    Ciproxifan maleate
    		Antagonist 99.68%
    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.
    Ciproxifan maleate
  • HY-B0530
    Azacyclonol
    		Inhibitor 99.93%
    Azacyclonol (γ-pipradol), a metabolite of Terfenadine, is a central depressant agent. Azacyclonol is a ganglion-blocking agent. Azacyclonol can be used to diminish psychoses-induced hallucinations.
    Azacyclonol
  • HY-101198
    Clobenpropit dihydrobromide
    		Modulator 99.76%
    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 (Ki 13 nM). Clobenpropit dihydrobromide also binds to serotonin 5-HT3 receptors (Ki 7.4 nM) and α2A/α2C adrenoceptors (Ki 17.4/7.8 nM). Clobenpropit dihydrobromide increases apoptosis.
    Clobenpropit dihydrobromide
  • HY-120124
    Samelisant
    		Antagonist 98.65%
    Samelisant (SUVN-G3031) is a potent and selective histamine H3 receptor (H3R) inverse agonist with good brain penetration and oral bioavailability. Samelisant has a similar binding affinity towards human (hH3R; Ki=8.7 nM) and rat (rH3R;Ki=9.8 nM) H3R indicating no inter-species differences. Samelisant can be used for the research of sleep-related disorders.
    Samelisant
  • HY-101173
    Imetit dihydrobromide
    		Agonist 98.16%
    Imetit dihydrobromide (VUF 8325 dihydrobromide) is a high affinity and potent agonist of histamine H3 and H4 receptors, with Ki values of 0.3 and 2.7 nM, respectively. Imetit mimics histamine effect in triggering a shape change in eosinophils (EC50=25 nM).
    Imetit dihydrobromide
  • HY-106372A
    Carcainium chloride
    		99.47%
    Carcainium chloride (QX 572) is a quaternary derivative of Lidocaine. Antitussive effect.
    Carcainium chloride
  • HY-101420
    VUF10460
    		Agonist 99.35%
    VUF10460 is a non-imidazole histamine H4 receptor agonist; binds to rat H4 receptor with a pKi of 7.46.
    VUF10460
  • HY-B0527AR
    Amitriptyline hydrochloride (Standard)
    		Antagonist
    Amitriptyline hydrochloride (Standard) is the analytical standard of Amitriptyline hydrochloride (HY-B0527A). This product is intended for research and analytical applications. Amitriptyline hydrochloride is an orally active tricyclic antidepressant (TCA). Amitriptyline hydrochloride mainly exerts its antidepressant effect by blocking SERT (Ki = 3.45 nM) and NET (Ki = 13.3 nM), thereby increasing the concentrations of 5-hydroxytryptamine (5-HT) and norepinephrine (NE) in the synaptic cleft. Amitriptyline hydrochloride is also an agonist at α2A and TrkA/TrkB receptors, thereby exerting analgesic and neurotrophic activities (inhibiting cell apoptosis). Amitriptyline hydrochloride can reduce inflammation, angiogenesis and fibrosis. Amitriptyline hydrochloride binds to DAT (with Ki = 2.58 μM). Amitriptyline hydrochloride has high affinity for a series of receptors and can antagonize muscarinic cholinergic receptors (M1/M2/M3/M4/M5 receptors) (Ki = 11-24 nM), H1 receptors (Ki = 0.5-1.1 nM), adrenergic α1 receptors (Ki = 4.4 nM), etc., resulting in a series of side effects. Amitriptyline hydrochloride can block sodium channels and hERG potassium channel (IC50 = 4.78 μM) and it has cardiotoxicity.
    Amitriptyline hydrochloride (Standard)
  • HY-147276
    Izuforant
    		Antagonist 98.88%
    Izuforant (JW1601) (Compound 24) is an orally active histamine H4 receptor (H4R) antagonist with an IC50 of 36 nM against human H4R. Izuforant also shows binding affinity of human serotonin 3 receptor (h5-HT3R) with an IC50 of 9.1 μM. Izuforant exhibits strong anti-pruritic and anti-inflammatory efficacies.
    Izuforant
Cat. No. Product Name / Synonyms Application Reactivity
Histamine Receptor Isoform Comparison

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