Cefazolin EP Impurity A
CAS No. 30246-33-4
C11H12N4O3S3
M.W. 344.44

Cefazolin EP Impurity D Sodium Salt
CAS No. 27164-45-0
C13H13N6O6S. Na
M.W. 381.35 22.99

Cefazolin EP Impurity C
CAS No. 56842-77-4
C11H12N6O4S
M.W. 324.32

Cefazolin Sodium EP Impurity H (7-Aminocephalosporanic Acid)
CAS No. 957-68-6
C10H12N2O5S
M.W. 272.28

Cefazolin Sodium EP Impurity K
CAS No. 1322626-65-2
C14H13N8O4S3
M.W. 453.50

Cefazolin EP Impurity L
C14H14N8O4S3
M.W. 454.51

Cefazolin EP Impurity J
C11H12N6O5S
M.W. 340.31

Cefazolin Sodium EP Impurity I
C14H16N8O5S3
M.W. 472.53

Cefazolin Impurity 24 DiHCl
C11H14N4O4S3. 2 HCl
M.W. 362.44 2*36.46
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