Synonyms: 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicacid, 3-[(acetyloxy)methyl]-7-[(5-amino-5-carboxy-1-oxopentyl)amino]-8-oxo-,monopotassium salt, [6R-[6a,7b(R*)]]-;5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-(5-amino-5-carboxyvaleramido)-3-(hydroxymethyl)-8-oxo-,acetate (ester), monopotassium salt (8CI); Cephalosporin C potassium salt;Potassium cephalosporin C