has functional parent pivaloyloxymethyl ester ampicillin penicillanic acid ester pivampicillin 463.178 463.54828 Beilstein:5406076 C22H29N3O6S CAS:33817-20-8 CHEBI:8255 DrugBank:DB01604 Drug_Central:2218 InChI=1S/C22H29N3O6S/c1-21(2,3)20(29)31-11-30-19(28)15-22(4,5)32-18-14(17(27)25(15)18)24-16(26)13(23)12-9-7-6-8-10-12/h6-10,13-15,18H,11,23H2,1-5H3,(H,24,26)/t13-,14-,15+,18-/m1/s1 KEGG:C11750 KEGG:D08396 LINCS:LSM-6580 Patent:US3660575 ZEMIJUDPLILVNQ-ZXFNITATSA-N [(2,2-dimethylpropanoyl)oxy]methyl 6beta-[(2R)-2-amino-2-phenylacetamido]-2,2-dimethylpenam-3alpha-carboxylate [H][C@]12SC(C)(C)[C@@H](N1C(=O)[C@H]2NC(=O)[C@H](N)c1ccccc1)C(=O)OCOC(=O)C(C)(C)C ampicillin pivaloyloxymethyl ester chebi_ontology pivaloyloxymethyl ampicillinate pivampicilina pivampicillin pivampicilline pivampicillinum