Form

Powder

Appearance

White or yellowish crystalline powder

Impurity Profile

Impurity A| (E)-isomer; (6R,7R)-7-[[(2E)-2-(2-Amino-4-thiazolyl)-2-(methoxyimino)acetyl]amino]-8-oxo-3-[[(1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazin-3-yl)thio]methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid Sodium||C₁₈H₁₇N₈NaO₇S₃|576.56| |Ceftriaxone (E)-isomer; ?(6R,7R)-7-[[(2E)-2-(2-Amino-4-thiazolyl)-2-(methoxyimino)acetyl]amino]-8-oxo-3-[[(1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazin-3-yl)thio]methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid|92143-312|C₁₈H₁₈N₈O₇S₃|554.58|
Impurity B| 3-Desacetyl Cefotaxime Lactone;[5aR-[5a汐,6汕(Z)]]-2-Amino-汐-(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|66340-33-8|C₁₄H₁₃N₅O₅S₂|395.42|
Impurity C| 2-methyl-3-sulphanyl-1,2-dihydro-1,2,4-triazine-5,6-dione||C₄H₅N₃O₂S|159.17|
Impurity D| S-2-Benzothiazolyl-2-amino-汐-(methoxyimino)-4-thiazolethiolacetate; (汐Z)-2-Amino-汐-(methoxyimino)-4-thiazoleethanethioic Acid S-2-Benzothiazolyl Ester; (Z)-2-Amino-汐-(methoxyimino)-4-thiazoleethanethioic Acid S-2-Benzothiazolyl Ester; (Z)-2-[Methoxyimino]-2-(2-aminothiazol-4-yl)acetic Acid S-2-Benzothiazole Ester; S-(Benzothiazol-2-yl) (Z)-(2-Aminothiazol-4-yl)(methoxyimino)thioacetate|80756-850|C₁₃H₁₀N₄O₂S₃|350.44|
Impurity E| 7-Amino-3-[[(2,5-dihydro-6-hydroxy-2-methyl-5-oxo-1,2,4-triazin-3-yl)thio]methyl]cephalosporanic Acid; (6R,7R)-7-Amino-8-oxo-3-[[(1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazin-3-yl)thio]methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid; (6R-trans)-7-Amino-8-oxo-3-[[(1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazin-3-yl)thio]methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid|58909-56-1|C₁₂H₁₃N₅O₅S₂|371.40|