CMZ50: Cefmetazole Lactone

(5aR-cis)-2-[(Cyanomethyl)thio]-N-(1,4,5a,6-tetrahydro-6-methoxy-1,7-dioxo-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)-acetamide ;

CAS # 70993-70-3 ;

C13H13N3O5S2 ;
Mol. Wt.: 355.39 ;