70993-70-3

Cefmetazole Lactone 2-((cyanomethyl)thio) Cefmetazole Lactone 1 Cefmetazole Impurity 3 Cefmetazole inner ester Cefmetazole Lactone (~90%) Cefmetazole Sodium Impurity A Cefmezole sodium decomposition Cefmetazole Related Compound inner ester Cefmetazole Impurity 1 (Cefmetazole Lactone) 2-((cyanomethyl)thio)-N-((5aR,6S)-6-methoxy-1,7-dioxo-1,4,5a,6-tetrahydro-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)acetamide (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 Acetamide, 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)-, (5aR-cis)- (9CI) Cefmetazole impurity 4/Cefmetazole Lactone/2-((cyanomethyl)thio)-N-((5aR,6S)-6-methoxy-1,7-dioxo-1,4,5a,6-tetrahydro-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)acetamide