(6R,7R)-3-(acetyloxymethyl)-7-[[(2E)-2-(2-formamido-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid; (6R-(6alpha,7beta(Z)))-3-(Acetoxymethyl)-7-((2-(formylamino)thiazol-4-yl)(methoxyimino)acetamido)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid; Cefotaxime Sodium EP Impurity C
