英文别名Cefcapene Impurity 2; Cefcapene Impurity 9; 2,2-Dimethylpropanoyloxymethyl (6R,7R)-7-[(Z)-2-(2-t-Butoxycarbonylaminothiazol-4-yl)pent-2-enoylamino]-3-carbamoyloxymethyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate; PIVA; pivaloyloxymethyl 7β-[(Z)-2-(2-tert-butoxycarbonylaminothiazol-4-yl)-2-pentenoylamino]-3-carbamoyloxymethyl-3-cephem-4-carboxylate; 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-[[(aminocarbonyl)oxy]methyl]-7-[[(2Z)-2-[2-[[(1,1-dimethylethoxy)carbonyl]amino]-4-thiazolyl]-1-oxo-2-penten-1-yl]amino]-8-oxo-, (2,2-dimethyl-1-oxopropoxy)methyl ester, (6R,7R)-; Boc-cefcapene pivoxil 
