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more general categories information about this item 03. Biological Effects of Specific Chemicals 03. Biological Effects of Specific Chemicals pharmacological uses [CHEBI:52210] (736) neurotransmitter agent [CHEBI:35942] (471) cholinergic drug [CHEBI:38323] (108) cholinergic agonist [CHEBI:38324] (16) methacholine [CHEBI:6804] (1) muscarinic agonist [CHEBI:38325] (8) methacholine [CHEBI:6804] (1) epitope [CHEBI:53000] (470) methacholine [CHEBI:6804] (1) 05. Industrial Uses 05. Industrial Uses pharmaceutical [CHEBI:52217] (1978) drug [CHEBI:23888] (1930) bronchoconstrictor agent [CHEBI:50141] (2) methacholine [CHEBI:6804] (1) cardiovascular drug [CHEBI:35554] (162) vasodilator agent [CHEBI:35620] (65) methacholine [CHEBI:6804] (1) 08. Chemical Category 08. Chemical Category ion [CHEBI:24870] (4391) polyatomic ion [CHEBI:36358] (2633) polyatomic cation [CHEBI:33702] (611) ammonium ion [CHEBI:35274] (507) quaternary ammonium ion [CHEBI:35267] (174) methacholine [CHEBI:6804] (1) cation [CHEBI:36916] (947) polyatomic cation [CHEBI:33702] (611) ammonium ion [CHEBI:35274] (507) quaternary ammonium ion [CHEBI:35267] (174) methacholine [CHEBI:6804] (1) main group molecular entity [CHEBI:33579] (25650) p-block molecular entity [CHEBI:33675] (25343) pnictogen molecular entity [CHEBI:33302] (10027) nitrogen molecular entity [CHEBI:51143] (7930) ammonium ion [CHEBI:35274] (507) quaternary ammonium ion [CHEBI:35267] (174) methacholine [CHEBI:6804] (1) chalcogen molecular entity [CHEBI:33304] (15225) oxygen molecular entity [CHEBI:25806] (14414) organooxygen compound [CHEBI:36963] (11352) carbonyl compound [CHEBI:36586] (5928) carboxylic ester [CHEBI:33308] (1495) acetate ester [CHEBI:47622] (184) methacholine [CHEBI:6804] (1) organochalcogen compound [CHEBI:36962] (11874) organooxygen compound [CHEBI:36963] (11352) carbonyl compound [CHEBI:36586] (5928) carboxylic ester [CHEBI:33308] (1495) acetate ester [CHEBI:47622] (184) methacholine [CHEBI:6804] (1) carbon group molecular entity [CHEBI:33582] (23847) organic molecular entity [CHEBI:50860] (23769) heteroorganic entity [CHEBI:33285] (15197) organochalcogen compound [CHEBI:36962] (11874) organooxygen compound [CHEBI:36963] (11352) carbonyl compound [CHEBI:36586] (5928) carboxylic ester [CHEBI:33308] (1495) acetate ester [CHEBI:47622] (184) methacholine [CHEBI:6804] (1) ester [CHEBI:35701] (3370) carboxylic ester [CHEBI:33308] (1495) acetate ester [CHEBI:47622] (184) methacholine [CHEBI:6804] (1) organic molecule [CHEBI:72695] (11399) organic oxo compound [CHEBI:36587] (5932) carbonyl compound [CHEBI:36586] (5928) carboxylic ester [CHEBI:33308] (1495) acetate ester [CHEBI:47622] (184) methacholine [CHEBI:6804] (1) polyatomic entity [CHEBI:36357] (18777) molecule [CHEBI:25367] (11520) organic molecule [CHEBI:72695] (11399) organic oxo compound [CHEBI:36587] (5932) carbonyl compound [CHEBI:36586] (5928) carboxylic ester [CHEBI:33308] (1495) acetate ester [CHEBI:47622] (184) methacholine [CHEBI:6804] (1) polyatomic ion [CHEBI:36358] (2633) polyatomic cation [CHEBI:33702] (611) ammonium ion [CHEBI:35274] (507) quaternary ammonium ion [CHEBI:35267] (174) methacholine [CHEBI:6804] (1) ChEBI Compound Accession Identifier: [CHEBI:6804] ChEBI Compound Description: 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. ChEBI Compound Identification Number: 6804 ChEBI InChI Value: InChI=1S/C8H18NO2/c1-7(11-8(2)10)6-9(3,4)5/h7H,6H2,1-5H3/q+1 ChEBI InChIKey Value: NZWOPGCLSHLLPA-UHFFFAOYSA-N ChEBI Compound Name: methacholine ChEBI SMILES Value: CC(C[N+](C)(C)C)OC(C)=O ChEBI Substance ID: 8145952 ChEBI URL: ChEBI:6804 ChemSpider ID: 1916 Ontomatica Chemical Accession Key (OnChAKey): NZWOPGCLSHLLPA_UHFFFAOYSA_N_000_000000 PubChem Compound ID: 1993