has role diltiazem ammonium ion derivative vasodilator agent histamine agonist calcium channel blocker diltiazem(1+) +1 C22H27N2O4S An ammonium ion resulting from the protonation of the nitrogen of the dimethylaminoethyl substituent of diltiazem. The major species at pH 7.3. InChI=1S/C22H26N2O4S/c1-15(25)28-20-21(16-9-11-17(27-4)12-10-16)29-19-8-6-5-7-18(19)24(22(20)26)14-13-23(2)3/h5-12,20-21H,13-14H2,1-4H3/p+1/t20-,21+/m1/s1 2-[(2S,3S)-3-acetoxy-2-(4-methoxyphenyl)-4-oxo-3,4-dihydro-1,5-benzothiazepin-5(2H)-yl]-N,N-dimethylethanaminium HSUGRBWQSSZJOP-RTWAWAEBSA-O chebi_ontology 415.52500 CHEBI:82812 COc1ccc(cc1)[C@@H]1Sc2ccccc2N(CC[NH+](C)C)C(=O)[C@@H]1OC(C)=O 415.16860 ent-diltiazem(1+)