7-triethylsilylacetaminodesacetoxycephalosporanic acid potassium salt

7-(triethylsilylpropionylamino)desacetoxycephalosporanic acid potassium salt

sodium 3-methyl-5,5,8-trioxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate

(6R,7R)-7-{2-[(Z)-Methoxyimino]-2-thieno[2,3-b]thiophen-2-yl-acetylamino}-3-methyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid

7-<α-methoxyimino-α-(6-fluoro-3-benzothienyl)acetamido>-3-methyl-3-cephem-4-carboxylic acid