Synonyms: (2-Hydroxypropyl)trimethylammoniumbromide, acetate (6CI,7CI); 1-Propanaminium, 2-(acetyloxy)-N,N,N-trimethyl-,bromide (9CI); Ammonium, (2-hydroxypropyl)trimethyl-, bromide, acetate (8CI);Acetyl-b-methylcholine bromide; Mecholin;Mecholyl bromide; Methacholine bromide; O-Acetyl-b-methylcholine bromide; Trimethyl-b-acetoxypropylammonium bromide; b-Methylacetylcholine bromide