The chemical Methacholine Chloride has a known molecular formula of C8-H18-N-O2.Cl. Synonyms may include: Acetyl-beta-methylcholine chloride, O-Acetyl-beta-methylcholine chloride, AI3-51680, Amechol, Chlorure de methacholine [French], Chlorure de methacholine [INN-French], Cloruro de metacolina [INN-Spanish], Cloruro de metacolina [Spanish], EINECS 200-537-2, (2-Hydroxypropyl)trimethylammonium chloride acetate (ChemID).