Synonyms: Cephalosporin C sodium;Cephalosporin C sodium salt;Sodium cephalosporin C;5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-((acetyloxy)methyl)-7-(((5R)-5-amino-5-carboxy-1-oxopentyl)amino)-8-oxo-, monosodium salt, (6R,7R)-;5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-((acetyloxy)methyl)-7-((5-amino-5-carboxy-1-oxopentyl)amino)-8-oxo-, monosodium salt, (6R-(6alpha,7beta(R*)))-;Sodium hydrogen (6R-(6alpha,7beta(R*)))-3-(acetoxymethyl)-7-((5-amino-5-carboxylato-1-oxopentyl)amino)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylate