4-甲基苯甲酸酐

tert-butyl N-[(4-methylbenzoyl)amino]carbamate

7β-(2-(thien-2-yl)acetamido)-3-(((((4-methylbenzoyl)hydrazino)carbonyl)oxy)methyl)-3-cephem-4-carboxylic acid

7β-(2-(thien-2-yl)acetamido)-3-<<<<(4-methylbenzoyl)hydrazino>carbonyl>oxy>methyl>-3-cephem-4-carboxylic acid 1β-sulfoxide

(4-nitrophenyl) 4-methylbenzoate