Pharmaceutical Impurity Standards & Reference Standards

Browse our full catalog of pharmaceutical impurities, reference materials, and research chemicals.

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Aspirin

Acetylsalicylic Acid Impurity 1

CAT No.-
CAS No.-
Mol. F.C16H12O6
Mol. W.300.27
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Aspirin

Acetylsalicylic Acid Impurity 2

CAT No.-
CAS No.318515-20-7
Mol. F.C12H10N2O3
Mol. W.230.22
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Aspirin

Acetylsalicylic Acid Impurity 3

CAT No.-
CAS No.15540-79-1
Mol. F.C8H7NO5
Mol. W.197.15
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Aspirin

Acetylsalicylic Acid Impurity 5

CAT No.-
CAS No.18698-59-4
Mol. F.C11H10O5
Mol. W.222.20
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Aspirin

Acetylsalicylic Acid Impurity 6 Sodium Salt (Sodium Methyl Parahydroxybenzoate)

CAT No.-
CAS No.5026-62-0
Mol. F.C8H7O3. Na
Mol. W.151.14 22.99
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Aspirin

Acetylsalicylic Acid Impurity A-d4 (AspirinImpurity A-d4)

CAT No.-
CAS No.152404-47-2
Mol. F.C7H2D4O3
Mol. W.142.15
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ASTAXANTHIN

Astaxanthin

CAT No.-
CAS No.472-61-7
Mol. F.C40H52O4
Mol. W.596.85
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ATALUREN

Ataluren

CAT No.-
CAS No.775304-57-9
Mol. F.C15H9FN2O3
Mol. W.284.25
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ATALUREN

Ataluren acyl glucuronide

CAT No.-
CAS No.-
Mol. F.C21H17FN2O9
Mol. W.460.38
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ATALUREN

Ataluren-D4

CAT No.-
CAS No.-
Mol. F.C15H5FN2O3D4
Mol. W.288.27
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