(Z)-2-(2-aminothiazol-4-yl)-N-((5aR,6R)-1,7-dioxo-1,3,4,5a,6,7-hexahydroazeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)-2-(methoxyimino)acetamide;[5aR-[5a?,6?]]-2-Amino-?-(methoxyimino)-N-(1,4,5a,6-tetrahydro-1,7-dioxo-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)-4-thiazoleacetamide;Cefotaxime Sodium EP Impurity E;3-Desacetyl Cefotaxime Lactone (E/Z Mixture)
