pivaloyloxymethyl 7β-[(Z)-2-(2-tert-butoxycarbonylaminothiazol-4-yl)-2-pentenoylamino]-3-carbamoyloxymethyl-3-cephem-4-carboxylate

7β-((Z)-2-(2-tert-butoxycarbonylaminothiazol-4-yl)-2-pentenoylamino)-3-carbamoyloxymethyl-3-cephem-4-carboxylic acid

特戊酸碘甲酯

diphenylmethyl 7β-<(Z)-2-(2-tert-butoxycarbonylaminothiazol-4-yl)-2-pentenoylamino>-3-carbamoyloxymethyl-3-cephem-4-carboxylate

(Z)-2-(2-叔丁氧羰基氨基噻唑-4-基)-2-戊烯酸