is conjugate base of monocarboxylic acid anion perindopril(1-) 367.22385 chebi_ontology C19H31N2O5 IPVQLZZIHOAWMC-QXKUPLGCSA-M CHEBI:78000 -1 A monocarboxylic acid anion that is the conjugate base of perindopril, obtained by deprotonation of the hydroxy group; major species at pH 7.3. (2S,3aS,7aS)-1-{(2S)-2-[(1S)-1-(ethoxycarbonyl)butylamino]propanoyl}octahydro-1H-indole-2-carboxylate 367.46040 CCC[C@H](N[C@@H](C)C(=O)N1[C@H]2CCCC[C@H]2C[C@H]1C([O-])=O)C(=O)OCC InChI=1S/C19H32N2O5/c1-4-8-14(19(25)26-5-2)20-12(3)17(22)21-15-10-7-6-9-13(15)11-16(21)18(23)24/h12-16,20H,4-11H2,1-3H3,(H,23,24)/p-1/t12-,13-,14-,15-,16-/m0/s1 perindopril