Synonyms: 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicacid,3-[[(aminocarbonyl)oxy]methyl]-7-[(5-amino-5-carboxy-1-oxopentyl)amino]-7-methoxy-8-oxo-,[6R-[6a,7a,7(R*)]]-;5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid,7-(5-amino-5-carboxyvaleramido)-3-(hydroxymethyl)-7-methoxy-8-oxo-, carbamate(ester), D- (8CI);7-(D-5-Amino-5-carboxyvaleramido)-3-(carbamoyloxymethyl)1-7-methoxy-3-cephem-4-carboxylicacid; 7b-(D-5-Amino-5-carboxyvaleramido)-3-(carbamoyloxymethyl)-7a-methoxy-3-cephem-4-carboxylicacid; Antibiotic 842A; Antibiotic A 16886B; Antibiotic A 16886I; Antibiotic WS3442C; Cephamycin C; Cephemimycin