Cefazolin Sodium - Impurity I

1675244-99-1

2-((2-(1H-Tetrazol-1-yl)acetamido)(carboxy)methyl)-5-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-5,6-dihydro-2H-1,3-thiazine-4-carboxylic Acid;2-[Carboxy[(1H-tetrazol-1-ylacetyl)amino]methyl]-5-[[(5-methyl-1,3,4-thiadiazol-2-yl)sulfanyl]methyl]-5,6-dihydro-2H-1,3-thiazine-4-carboxylic Acid;