Impurity Standards

IP, USP and EP Compliant

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CEFOXITIN

Cefoxitin impurity B

CAT No.-
CAS No.-
Mol. F.C16H17N3O7S2
Mol. W.427.46
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CEFPODOXIME PROXETIL

Cefpodoxime Proxetil Impurity K (Mixture ofDiastereomers)

CAT No.-
CAS No.-
Mol. F.C21H27N5O10S2
Mol. W.573.59
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CEFOXITIN

Cefoxitin EP Impurity C

CAT No.-
CAS No.10590-10-0
Mol. F.C14H12N2O4S2
Mol. W.336.39
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CEFOXITIN

Cefoxitin impurity D

CAT No.-
CAS No.-
Mol. F.C15H14N2O5S2
Mol. W.366.42
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CEFPIROME

Cefpirome Impurity 1

CAT No.-
CAS No.-
Mol. F.C21H23N6O3S2. Cl
Mol. W.471.57 35.45
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CEFPIROME

Cefpirome Impurity 2

CAT No.-
CAS No.-
Mol. F.C6H8N4O2S
Mol. W.200.22
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CEFPIROME

Cefpirome Impurity 3

CAT No.-
CAS No.-
Mol. F.C13H15N5O4S2
Mol. W.369.41
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CEFPODOXIME PROXETIL

Cefpodoxime Proxetil EP Impurity A (CefpodoximeAcid)

CAT No.-
CAS No.80210-62-4
Mol. F.C15H17N5O6S2
Mol. W.427.45
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CEFPODOXIME PROXETIL

Cefpodoxime Proxetil EP Impurity A -d3 Sodium Salt (Cefpodoxime-d3 Acid Sodium Salt)

CAT No.-
CAS No.82619-04-3(non-labelled)
Mol. F.C15H13N5O6S2D3. Na
Mol. W.429.47 22.99
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CEFPODOXIME PROXETIL

Cefpodoxime Proxetil EP Impurity B (Mixture ofDiastereomers)

CAT No.-
CAS No.947692-14-0
Mol. F.C20H25N5O8S2
Mol. W.527.58
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