Impurity Standards

IP, USP and EP Compliant

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CEPHALEXIN (CEFALEXIN

Chloro Cephalexin Impurity

CAT No.-
CAS No.-
Mol. F.C16H16ClN3O4S
Mol. W.381.83
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CEPHALOSPORIN

Cephalosporin impurity 1 (7-Amino-deacetylcephalosporanic Acid)

CAT No.-
CAS No.15690-38-7
Mol. F.C8H10N2O4S
Mol. W.230.24
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CEPHALOSPORIN

Cephalosporin Impurity 2 (Cephalosporin LactoneImpurity)

CAT No.-
CAS No.-
Mol. F.C8H8N2O3S
Mol. W.212.23
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CEPHALEXIN (CEFALEXIN

Cephalexin EP Impurity D (Cefradine EP ImpurityF, Cefadroxil EP Impurity G)

CAT No.-
CAS No.34876-35-2
Mol. F.C5H6O2S
Mol. W.130.16
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CEPHALEXIN (CEFALEXIN

Cephalexin Impurity E (Cefradine EP Impurity G)

CAT No.-
CAS No.146794-70-9
Mol. F.C13H18N2O4S
Mol. W.298.36
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CEPHALEXIN (CEFALEXIN

Cefalexin EP Impurity F Trifluoroacetate

CAT No.-
CAS No.79750-46-2 (freebase)
Mol. F.C16H17N3O4S. C2HF3O2
Mol. W.347.40 114.02
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CEPHALEXIN (CEFALEXIN

Cephalexin Impurity J (Cephalexin Sulfoxide)

CAT No.-
CAS No.56193-21-6
Mol. F.C16H17N3O5S
Mol. W.363.39
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CEPHALEXIN (CEFALEXIN

Cephalexin Impurity 7

CAT No.-
CAS No.-
Mol. F.C24H24N4O5S
Mol. W.480.54
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CEPHALEXIN (CEFALEXIN

Cefalexin Impurity 1

CAT No.-
CAS No.65870-51-1
Mol. F.C11H11N3O2
Mol. W.217.23
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CELECOXIB

Celecoxib Impurity 9

CAT No.-
CAS No.1061214-06-9
Mol. F.C15H17N3O2S
Mol. W.303.38
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