Cefazolin EP Impurity D ;
(6R,7R)-3-[(Acetyloxy)methyl]-8-oxo-7-[(1H-tetrazol-1-ylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid ;
CAS # 32510-61-5 (Acid) ; 27164-45-0 (Sodium) ;
C13H14N6O6S (Acid) ; Mol. Wt.: 382.35 ;
C13H13N6NaO6S (Sodium) ; MW: 404.33 ;