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-B1204
    Histamine
    		Activator 99.99%
    Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter.
    Histamine
  • HY-B0298A
    Clemastine fumarate
    		Antagonist 99.97%
    Clemastine (HS-592) fumarate is a selective histamine H1 receptor antagonist. Clemastine fumarate is an antihistamine mainly used for relieving symptoms of allergic reactions primarily by competing with histamine to bind H1 receptors. Anti-inflammatory effects.
    Clemastine fumarate
  • HY-14289
    Cimetidine
    		Modulator ≥98.0%
    Cimetidine (SKF-92334) is an orally active and inverse histamine H2 receptor antagonist with a Ki of 0.6 μM. Cimetidine is a gastric acid reducer, and can be used for duodenal and gastric ulcers research. Cimetidine has anti-cancer and anti-inflammatory activity.
    Cimetidine
  • HY-B1395
    Mecamylamine hydrochloride
    		Inhibitor ≥98.0%
    Mecamylamine hydrochloride is an orally active, nonselective, noncompetitive nAChR antagonist. Mecamylamine hydrochloride is also a ganglionic blocker. Mecamylamine hydrochloride can across the blood-brain barrier. Mecamylamine hydrochloride can be used in the research of neuropsychiatric disorders, hypertension, antidepressant area.
    Mecamylamine hydrochloride
  • HY-12532
    Astemizole
    		Antagonist 99.62%
    Astemizole (R 43512), a second-generation antihistamine agent 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.
    Astemizole
  • HY-B0349
    Meclizine dihydrochloride
    		Antagonist 99.95%
    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.
    Meclizine dihydrochloride
  • HY-B1397
    Cyclizine
    		Antagonist 98.64%
    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.
    Cyclizine
  • HY-B0971
    Pheniramine maleate
    		Inhibitor 99.94%
    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.
    Pheniramine maleate
  • HY-17043
    Loratadine
    		Agonist 99.98%
    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.
    Loratadine
  • HY-B1193
    Terfenadine
    		Antagonist 99.91%
    Terfenadine ((±)-Terfenadine) is a potent open-channel blocker of hERG with an IC50 of 204 nM. Terfenadine, an H1 histamine receptor antagonist, acts as a potent apoptosis inducer in melanoma cells through modulation of Ca2+ homeostasis. Terfenadine induces ROS-dependent apoptosis, simultaneously activates Caspase-4, -2, -9.
    Terfenadine
  • HY-B0539
    Desloratadine
    		Antagonist 99.83%
    Desloratadine (Sch34117) is an orally active and selective H1 receptor antagonist (Ki=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.
    Desloratadine
  • HY-B0527A
    Amitriptyline hydrochloride
    		Inhibitor 98.91%
    Amitriptyline hydrochloride is an inhibitor of serotonin reuptake transporter (SERT) and noradrenaline reuptake transporter (NET), with Kis of 3.45 nM and 13.3 nM for human SERT and NET, respectively. Amitriptyline hydrochloride also weakly binds to dopamine reuptake transporter (DAT) with a Ki of 2.58 μM. Amitriptyline hydrochloride also inhibits adrenergic, muscarinic, histamine and 5-HT receptors. Amitriptyline hydrochloride is a TrkA and TrkB receptors agonist with potent neurotrophic activity. Amitriptyline hydrochloride has antidepressant activity.
    Amitriptyline hydrochloride
  • HY-N0054
    Osthole
    		Inhibitor 99.95%
    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.
    Osthole
  • HY-107647
    (S)-(+)-Dimethindene maleate
    		Antagonist 99.94%
    (S)-(+)-Dimethindene maleate, an enantiomer, is a potent M2-selective muscarinic receptor antagonist (pA2 = 7.86/7.74; pKi = 7.78). (S)-(+)-Dimethindene maleate shows lower affinities for the muscarinic M1 (pA2 = 6.83/6.36; pKi = 7.08), the M3 (pA2 = 6.92/6.96; pKi = 6.70) and the M4 receptors (pKi = 7.00), respectively. (S)-(+)-Dimethindene maleate also is a histamine H1 receptor antagonist (pA2 = 7.48).
    (S)-(+)-Dimethindene maleate
  • HY-B0377
    Famotidine
    		Antagonist 99.68%
    Famotidine (MK-208) is a competitive histamine H2-receptor antagonist. Its main pharmacodynamic effect is the inhibition of gastric secretion.
    Famotidine
  • HY-B0303A
    Diphenhydramine hydrochloride
    		Antagonist 99.98%
    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 hydrochloride
  • HY-B0801A
    Fexofenadine hydrochloride
    		Antagonist 99.86%
    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.
    Fexofenadine hydrochloride
  • HY-B0725
    Doxepin Hydrochloride
    		Antagonist 99.79%
    Doxepin hydrochloride is an orally active tricyclic antidepressant agent. 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. Doxepin inhibits reuptake of serotonin and norepinephrine as a tricyclic antidepressant.
    . Doxepin has therapeutic effects in atopic dermatitis，chronic urticarial，can improve cognitive processes， protect central nervous system.
    . Doxepin has also been proposed as a protective factor against oxidative stress.
    .
    Doxepin Hydrochloride
  • HY-A0077
    Perphenazine
    		Antagonist 99.95%
    Perphenazine is an orally active dopamine receptor and histamine-1 receptor antagonist, with Ki 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.
    Perphenazine
  • HY-B0157A
    Ketotifen fumarate
    		Inhibitor 99.92%
    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.
    Ketotifen fumarate
Cat. No. Product Name / Synonyms Application Reactivity
Histamine Receptor Isoform Comparison

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