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

(6R,7R)-7-[(R)-2-Amino-2-(5,6-dichloro-benzo[b]thiophen-3-yl)-acetylamino]-3-methyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid

(6R,7R)-7-[(S)-2-Amino-2-(5,6-dichloro-benzo[b]thiophen-3-yl)-acetylamino]-3-methyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid

(6R,7R)-diphenylmethyl 7-[L-N-tert-butoxycarbonyl-2-phenylglycyl]amino-3-methyl-8-thioxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-2-carboxylate

(6R,7R)-7-[2-Amino-2-(2,3-dihydro-benzofuran-5-yl)-acetylamino]-3-methyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid