Term Name:	methacholine
Synonyms:	2-acetyloxy-N,N,N-trimethylpropan-1-aminium, Acetyl-beta-methylcholine, Acetylmethylcholine, MCh, Methacholine
Definition:	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.
Ontology:	ChEBI [CHEBI:6804]  ( EBI )