VU0467319 (Compound VU319) is a highly selective and blood-brain-permeable, orally active M1 positive allosteric modulator (PAM) (EC50: 492 nM). VU0467319 is selective (EC50 > 30 μM) versus M2-5 for both human and rat. VU0467319 improves cognitive impairment in Alzheimer's disease (AD) through central M1 muscarinic receptors. VU0467319 does not induce cholinergic adverse reactions and has potential in AD research.

Solifenacin N-oxide (Solifenacin N1-oxide) is an inactive metabolite of the muscarinic receptor antagonist Solifenacin.

SCH 211803 is a selective antagonist of the M2 muscarinic receptor. SCH 211803 is promising for research of cardiovascular and nervous system diseases.

p-F-HHSiD (p-Fluorohexahydrosiladifenidol) hydrochloride is a selective M3 mAChR antagonist. p-F-HHSiD hydrochloride blocks Acetylcholine-mediated vasodilatation in human umbilical vein endothelial cells (HUVECs).

Oxotremorine is an agonist for mAChR, that activates M1 and M3 acetylcholine receptors. Oxotremorine exhibits nicotine-like effects in drug discrimination experiments in macaques.

Lu 25-077 is a brain-penetrant and pharmacologically active N-demethyl metabolite of Lu 25-109, a DNA topoisomerase I (topoisomerase I) inhibitor.

KTX-005 is the agonist for mAChR that regulates the signaling pathway of the neurotransmitter acetylcholine, and can be used for research of schizophrenia.

Imidafenacin Metabolite M4 is a metabolite of the muscarinic acetylcholine receptor antagonist Imidafenacin.

Desiodomethyl 4-DAMP is a muscarinic receptor antagonist.

Caramiphen hydrochloride is a muscarinic antagonist. Caramiphen hydrochloride shows anticonvulsive properties. Caramiphen hydrochloride offers partial protection against Soman-induced seizures and neuropathology.

Betovumeline is the agonist for muscarinic receptor and can be used for researchs of neurological disorders.

AE9C90CB, muscarinic receptor antagonist, has greater affinity for M3 muscarinic receptors with pKi of 9.90 and was 20-fold more selective for M3 than for M2 muscarinic receptors.

5-Hydroxymethyl tolterodine (formate) (PNU-200577 (formic)) is an active metabolite of the muscarinic acetylcholine receptor antagonists Tolterodine and Fesoterodine. 5-Hydroxymethyl tolterodine (formate) is formed from tolterodine by the cytochrome P450 (CYP) isoform CYP2D6 and from fesoterodine by plasma esterases.

(S)-Oxybutynin (Esoxybutynin) hydrochloride is a potent muscarinic receptor antagonist.

VU0238441 is a pan muscarinic acetylcholine receptor (mAChR) positive allosteric modulator (PAM) with EC50s of 3.2 μM, 2.8 μM, 2.2 μM, 2.1 μM, >10 μM for M1, M2, M3, M5 and M4, respectively.

Eucatropine is a synthetic anticholinergic agent that acts as a potent inhibitor of muscarinic acetylcholine receptors (mAChRs). These receptors are part of the parasympathetic nervous system and play a key role in mediating the effects of acetylcholine, a neurotransmitter involved in various physiological processes such as smooth muscle contraction, glandular secretion, and heart rate regulation.

Velufenacin is a muscarinic receptor antagonist.

Aceclidine is a modulator of M3 muscarinic acetylcholine receptor. Aceclidine is a cycloplegic agent, a surfactant, a tonicity adjustor and optionally a viscosity enhancer and an antioxidant. Aceclidine has the potential for the research of disorders such as refractive errors of the eye, xerostomia, Sjogren's syndrome, glaucoma, conjunctivitis, lacrimal gland disease, and esotropia (extracted from patent US20150290125A1/US20110091459A1).

ASP8302 (ASP 8302) is a potent, selective, positive allosteric modulator (PAM) of muscarinic M3 receptor.Threonine 230 (Thr 230) is the amino acid essential for the PAM effect of ASP8302.

VU0405645 is a potent, biased M1 receptor-positive allosteric modulator, potentiates Ca2+ mobilization in CHO cells stably expressing the M1 receptor with EC50 of 340 nM.

PD 102807 is a M4 muscarinic receptor antagonist with an IC50 of 90.7 nM. PD 102807 inhibits M1, M2, M3, M5 muscarinic receptor with IC50s of 6558.7, 3440.7, 950.0, and 7411.7 nM, respectively. Antidyskinetic effect.

Tiotropium Bromide is a muscarinic acetylcholine receptor (mAChR M) antagonist that blocks the binding of the acetylcholine ligand and subsequent opening of the ligand-gated ion channel. This stops signaling between neurons and leads to muscle relaxation.

Diphemanil Methylsulfate is a quaternary ammonium anticholinergic, it binds muscarinic acetycholine receptors (mAchR).

Muscarine ((+)-Muscarine) is a toxin that can stimulate the parasympathetic nervous system. Muscarine is an agonist of muscarinic acetylcholine receptor (mAChR).

Arecaidine but-2-ynyl ester tosylate is a potent muscarinic agonist that shows 4.6-fold that is selectivity for mAChR M2 in the atrium versus those in the ileum.

Sofpironium bromide (BBI 4000) is an anticholinergic agent used in the study of primary axillary hyperhidrosis (PAH). Sofpironium bromide reduces sweating by inhibiting M3 muscarinic receptors in eccrine glands at the application site. Sofpironium bromide also has a high afnity for the M1, M2, M4 and M5 subtypes.

CHF-6366 is a potent M3 muscarinic antagonist and β2-adrenergic receptors agonist with pKi values of 10.4 and 11.4, respectively. CHF-6366 is also a weak calcium channel inhibitor (IC50~50 μM). CHF-6366 inhibits bronchoconstriction in guinea pigs.

Afacifenacin (SMP-986) is a potent and orally active muscarinic receptor antagonist. Afacifenacin inhibits the bladder afferent pathway through the sodium-channel blockade, increasing volume, and reducing the frequency of urination and incontinence. Afacifenacin has the potential for the research of overactive bladder (OAB).

PTAC oxalate is a selective muscarinic receptor ligand. PTAC oxalate is an partial agonist of M2 and M4 but antagonist of M1, M3, and M5 (Ki values of 0.2-2.8 nM for hM1-5 in CHO cells). PTAC oxalate alleviates the mechanical allodynia on the neuropathic pain and has antidepression effects.

VU0357017 hydrochloride is a highly selective M1 agonists that appear to act at an allosteric site to activate the receptor (EC50 = 477 ± 172 nM; pEC50 = 6.37 ± 0.15).