7-<α-methoxyimino-α-(4-chloro-2-benzothienyl)acetamido>-3-methyl-3-cephem-4-carboxylic acid

allyl (6R,7R) 7-phenoxyacetamido-1,1-dioxo-2-methylene-10-desacetoxyceph-3-em-4-carboxylate

(RS)-7(2-naphthylglycylamido)-3-methyl-3-cephem-4-carboxylic acid trifluoroacetate

(R)-7-<(4-chloro-2-benzothienyl)glycylamido>-3-methyl-3-cephem-4-carboxylic acid

(S)-7-<(4-chloro-2-benzothienyl)glycylamido>-3-methyl-3-cephem-4-carboxylic acid