158039-15-7

DFC-CYS Ceftiofur Impurity 6 Desfuroyl Ceftiofur Cysteine Disulfide Desfuroyl Ceftiofur Cysteine Disulfide (Contain 5% Ceftiofur) (6R,7R)-3-[[[(2R)-2-AMino-2-carboxyethyl]dithio]Methyl]-7-[[(2Z)-2-(2-aMino-4-thiazolyl)-2-(MethoxyiMino)acetyl]aMino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-[[[(2R)-2-amino-2-carboxyethyl]dithio]methyl]-7-[[(2Z)-2-(2-amino-4-thiazolyl)-2-(methoxyimino)acetyl]amino]-8-oxo-, (6R,7R)- (6R,7R)-3-[[[(2R)-2-amino-2-carboxyethyl]disulfanyl]methyl]-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid