2. Signaling Pathways
  3. GPCR/G Protein
    Neuronal Signaling
  4. mAChR

mAChR

Muscarinic acetylcholine receptor

mAChR

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mAChRs (muscarinic acetylcholine receptors) are acetylcholine receptors that form G protein-receptor complexes in the cell membranes of certainneurons and other cells. They play several roles, including acting as the main end-receptor stimulated by acetylcholine released from postganglionic fibersin the parasympathetic nervous system. mAChRs are named as such because they are more sensitive to muscarine than to nicotine. Their counterparts are nicotinic acetylcholine receptors (nAChRs), receptor ion channels that are also important in the autonomic nervous system. Many drugs and other substances (for example pilocarpineand scopolamine) manipulate these two distinct receptors by acting as selective agonists or antagonists. Acetylcholine (ACh) is a neurotransmitter found extensively in the brain and the autonomic ganglia.

mAChR Isoform Specific Products:

mAChR Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-100234
    DREADD agonist 21
    		Agonist 99.46%
    DREADD agonist 21 is a potent human muscarinic acetylcholine M3 receptors (hM3Dq) agonist (EC50=1.7 nM).
    DREADD agonist 21
  • HY-100234A
    DREADD agonist 21 dihydrochloride
    		Agonist 98.94%
    DREADD agonist 21 dihydrochloride is a potent human muscarinic acetylcholine M3 receptors (hM3Dq) agonist (EC50=1.7 nM).
    DREADD agonist 21 dihydrochloride
  • HY-107922
    Ethopropazine hydrochloride
    		Antagonist 99.32%
    Ethopropazine (Isothazine) hydrochloride is a potent and selective BChE inhibitor, a poor AChE inhibitor and a non-selective mAChR and NMDA antagonist. Ethopropazine hydrochloride has anticholinergic, antihistamine, antiadrenergic actions and properties. Ethopropazine hydrochloride alleviates thermal hyperalgesia in a dose dependent manner. Ethopropazine hydrochloride can be used for the research of Parkinson’s disease.
    Ethopropazine hydrochloride
  • HY-N0471
    L-Hyoscyamine
    		Antagonist 99.96%
    L-Hyoscyamine (Daturine), a natural plant tropane alkaloid, is a potent and competitive muscarinic receptor (MR) antagonist. L-Hyoscyamine is a levo-isomer to Atropine (HY-B1205).
    L-Hyoscyamine
  • HY-101381
    Otenzepad
    		Antagonist 99.93%
    Otenzepad (AF-DX 116) is a selective and competitive M2 muscarinic acetylcholine receptor antagonist, with IC50 values of 640 nM and 386 nM for rabbit peripheral lung and rat heart, respectively.
    Otenzepad
  • HY-B1006
    Pilocarpine nitrate
    		Agonist 99.83%
    Pilocarpine nitrate is a potent M3-type muscarinic acetylcholine receptor (M3 muscarinic receptor) agonist.
    Pilocarpine nitrate
  • HY-A0016
    Dronedarone
    		Inhibitor 99.93%
    Dronedarone (SR 33589), a derivative of amiodarone (HY-14187), is a class III antiarrhythmic agent for the study of atrial fibrillation (AF) and atrial flutter. Dronedarone is a potent blocker of multiple ion currents, including potassium current, sodium current, and L-type calcium current, and exhibits antiadrenergic effects by noncompetitive binding to β-adrenergic receptors. Dronedarone is a substrate for and a moderate inhibitor of CYP3A4.
    Dronedarone
  • HY-B0461
    Trospium chloride
    		Antagonist 99.93%
    Trospium chloride is an orally active, specific and competitive antagonist of muscarinic cholinergic receptors (mAChRs), with antimuscarinic activity. Trospium chloride binds to muscarinic receptors M1, M2 and M3 with high affinity, but not nicotinic, cholinergic receptors.
    Trospium chloride
  • HY-B0344
    Methscopolamine bromide
    		Inhibitor 99.81%
    Methscopolamine bromide ((-)-Scopolamine methyl bromide; Hyoscine methyl bromide) is a peripherally acting muscarinic receptor (mAChR) antagonist that cannot cross the blood-brain barrier. Methscopolamine bromide blocks the muscarinic negative feedback regulation of acetylcholine release from striatal cholinergic terminals, thereby increasing acetylcholine release in the striatum of freely moving rats. Methscopolamine bromide does not induce motor excitation in freely moving rats, nor does it alter the duration of ethanol-induced loss of righting reflex in mice. Methscopolamine bromide fails to antagonize the arecoline-mediated reduction in the duration of ethanol-induced loss of righting reflex in mice.
    Methscopolamine bromide
  • HY-76569
    Desfesoterodine
    		Antagonist 99.66%
    Desfesoterodine (PNU-200577) is a potent and selective muscarinic receptor (mAChR) antagonist with a KB and a pA2 of 0.84 nM and 9.14, respectively. Desfesoterodine is a major pharmacologically active metabolite of Tolterodine (PNU-200583; HY-A0024) and Fesoterodine (HY-70053). Desfesoterodine improves cerebral infarction induced detrusor overactivity in rats.
    Desfesoterodine
  • HY-A0030
    Fesoterodine fumarate
    		Antagonist 99.52%
    Fesoterodine Fumarate is an orally active, nonsubtype selective, competitive muscarinic receptor (mAChR) antagonist with pKi values of 8.0, 7.7, 7.4, 7.3, 7.5 for M1, M2, M3, M4, M5 receptors, respectively. Fesoterodine Fumarate is used for the overactive bladder (OAB).
    Fesoterodine fumarate
  • HY-17037
    Pirenzepine dihydrochloride
    		Antagonist 99.84%
    Pirenzepine (LS 519) dihydrochloride is a selective M1 mAChR (muscarinic acetylcholine receptor) antagonist, with poor penetration of the blood-brain barrier. Pirenzepine dihydrochloride reduces gastric acid secretion and reduces muscle spasm, can be used in peptic ulcers research. Pirenzepine dihydrochloride shows anti-proliferative activity to cancer cells.
    Pirenzepine dihydrochloride
  • HY-101239
    Oxotremorine sesquifumarate
    		Agonist 98.0%
    Oxotremorine sesquifumarate is a mAChR agonist that mainly activates M2 receptors. Oxotremorine sesquifumarate can be used for neurological research.
    Oxotremorine sesquifumarate
  • HY-17037A
    Pirenzepine
    		Antagonist 99.13%
    Pirenzepine (LS 519 free base) is a selective M1 mAChR (muscarinic acetylcholine receptor) antagonist, with poor penetration of the blood-brain barrier. Pirenzepine reduces gastric acid secretion and reduces muscle spasm, can be used in peptic ulcers research. Pirenzepine shows anti-proliferative activity to cancer cells.
    Pirenzepine
  • HY-B0394
    Atropine sulfate monohydrate
    		Antagonist 99.87%
    Atropine (Tropine tropate) sulfate monohydrate is a competitive muscarinic acetylcholine receptor (mAChR) antagonist with IC50 values of 0.39 and 0.71 nM for Human mAChR M4 and Chicken mAChR M4, respectively. Atropine sulfate monohydrate inhibits ACh-induced relaxations in human pulmonary veins. Atropine sulfate monohydrate can be used for research of anti-myopia and bradycardia.
    Atropine sulfate monohydrate
  • HY-B0321
    Tropicamide
    		Antagonist 98.87%
    Tropicamide (Ro 1-7683) is a selective M4 muscarinic acetylcholine receptor antagonist. When used as an eye drop, Tropicamide causes short-term mydriasis (pupil dilation) and cycloplegia. Tropicamide can be used in the research of neurological diseases, such as epilepsy.
    Tropicamide
  • HY-122190
    TAK-071
    		Modulator 99.44%
    TAK-071 is a novel, potent and highly selective muscarinic acetylcholine receptor 1 (M1R) positive allosteric modulator. EC50 of TAK-071 M1R agonist activities is 520 nM.
    TAK-071
  • HY-B1277
    Trihexyphenidyl hydrochloride
    		Antagonist 99.93%
    Trihexyphenidyl hydrochloride is a selective and orally active M1 muscarinic receptor antagonist with an IC50 of 3.7 nM for rat cerebral cortex M1 muscarinic receptors. Trihexyphenidyl hydrochloride modulates cholinergic activity, countering acetylcholine supersensitivity in neural pathways. Trihexyphenidyl hydrochloride improves movement disorder, inhibits McN-A-343 (HY-107648)-induced pressor responses, vagally-induced bradycardia and vasodilatation. Trihexyphenidyl hydrochloride can be used for the research of Parkinson's disease..
    Trihexyphenidyl hydrochloride
  • HY-B0499A
    Otilonium bromide
    		Inhibitor 99.67%
    Otilonium bromide (OB) is an orally active mAChR inhibitor and smooth muscle relaxant which can interfere with the mobilization of calcium in intestinal smooth muscle, OB can be used for research of irritable bowel syndrome.
    Otilonium bromide
  • HY-B0241
    Ipratropium bromide
    		Antagonist 99.92%
    Ipratropium bromide (Sch 1000) is a muscarinic receptor antagonist, with IC50s of 2.9 nM, 2 nM, and 1.7 nM for M1, M2, and M3 receptors, respectively. Ipratropium bromide relaxes smooth muscle, can be used in the research for COPD (chronic obstructive pulmonary disease) and asthma.
    Ipratropium bromide
Cat. No. Product Name / Synonyms Application Reactivity
mAChR Isoform Comparison

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