has role quaternary ammonium ion vasodilator agent muscarinic agonist acetate ester bronchoconstrictor agent epitope methacholine CAS:55-92-5 PMID:16477439 PMID:19589828 MCh Wikipedia:Methacholine A quaternary ammonium ion in which the nitrogen is substituted with three methyl groups and a 2-acetoxypropyl group. Parasympathomimetic bronchoconstrictor drug used in clinical diagnosis. PMID:22981792 NZWOPGCLSHLLPA-UHFFFAOYSA-N +1 PMID:15275856 PMID:8124805 PMID:8420242 Drug_Central:1726 PMID:18775882 chebi_ontology PMID:12128066 160.13321 PMID:23429803 CHEBI:6804 C8H18NO2 PMID:22826043 PMID:15694846 DrugBank:DB06709 160.23406 CC(C[N+](C)(C)C)OC(C)=O Beilstein:1769932 LINCS:LSM-6405 2-acetyloxy-N,N,N-trimethylpropan-1-aminium KEGG:C07471 InChI=1S/C8H18NO2/c1-7(11-8(2)10)6-9(3,4)5/h7H,6H2,1-5H3/q+1 Acetyl-beta-methylcholine Methacholine Acetylmethylcholine