7-Cyanacetylamino-cephalosporansaeure

Cephacetrile (base and/or unspecified salts)

(7R)-3-[(Acetyloxy)methyl]-7-[(cyanoacetyl)amino]cepham-3-ene-4-carboxylic acid

(6R,7R)-3-Acetoxymethyl-7-(2-cyanacetamido)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-en-2-carbonsaeure