D-2-Phenylglycine Cefdinan impurity S (6R-trans)-7-[(2,2-diMethyl-1-oxopropyl)aMino]-3-Methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2- D(-)-Phenylglycinamide 2-(2-Aminothiazole-4-yl)-2-methoxyiminoacetic acid (6R,7R)-7-(4-Hydroxyisoxazole-3-carboxaMido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid Phenylglycylcefalexin 7-AVCA Cefdinir Impurity M 3-Hydroxy-4-Methyl-2(5H)-thiophenone (6R,7R)-7-((Z)-2-(2-aMinothiazol-4-yl)-2-(hydroxyiMino)acetaMido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 5-oxide H-D-PHG-OME HCL (6R-trans)-7-[[(2-AMino-4-thiazolyl)acetyl]aMino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid Cefdinir Impurity E (Z)-Cefdinir