73240-08-1

Cefoperazole Impurity A Cefoperazone EP Impurity A Cefoperazone Sodium Impurity A Cefoperazone Impurity 1(Cefoperazone EP Impurity A) Des-(N-methyl-5-tetrazolethiolyl)furolactone Cefoperazone Cefoperazone Impurity A(EP)(Cefoperazone Lactone Impurity) [5aR-[5aα,6β(R*)]]-4-Ethyl-N-[1-(4-hydroxyphenyl)-2-oxo-2-[(1,4,5a,6-tetrahydro- 1,7-dioxo-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)aMino]ethyl]-2,3-dioxo-1-piperazinecarboxaMide [5aR-[5aalpha,6beta(R*)]]-4-Ethyl-N-[1-(4-hydroxyphenyl)-2-oxo-2-[(1,4,5a,6-tetrahydro-1,7-dioxo-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)amino]ethyl]-2,3-dioxo-1-piperazinecarboxamide 1-Piperazinecarboxamide, 4-ethyl-N-[1-(4-hydroxyphenyl)-2-oxo-2-[(1,4,5a,6-tetrahydro-1,7-dioxo-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)amino]ethyl]-2,3-dioxo-, [5aR-[5aα,6β(R*)]]- (9CI) Cefoperazone impurity 1/Cefoperazone EP Impurity A/N-((R)-2-(((5aR,6R)-1,7-dioxo-1,4,5a,6-tetrahydro-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)amino)-1-(4-hydroxyphenyl)-2-oxoethyl)-4-ethyl-2,3-dioxopiperazine-1-carboxamide Cefoperazone Impurity A: [5aR-[5aα,6β(R*)]]-4-Ethyl-N-[1-(4-hydroxyphenyl)-2-oxo-2-[(1,4,5a,6-tetrahydro- 1,7-dioxo-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)amino]ethyl]-2,3-dioxo-1-piperazinecarboxamide( Des-(N-methyl-5-tetrazolethiolyl)furolactone Cefoperazone Sodium Impurity A:[5aR-[5aα,6β(R*)]]-4-Ethyl-N-[1-(4-hydroxyphenyl)-2-oxo-2-[(1,4,5a,6-tetrahydro- 1,7-dioxo-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)amino]ethyl]-2,3-dioxo-1-piperazinecarboxamide(Des-(N-methyl-5-tetrazolethiolyl)furol