Pharmaceutical Impurity Standards & Reference Standards

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

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ATORVASTATIN

Ortho-Hydroxy Atorvastatin-d5 Lactone

CAT No.-
CAS No.-
Mol. F.C33H28FN2O5D5
Mol. W.561.67
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ASTEMIZOLE

O-Desmethyl Astemizole

CAT No.-
CAS No.73736-50-2
Mol. F.C27H29FN4O
Mol. W.444.55
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ASTEMIZOLE

O-Desmethylastemizole-d6

CAT No.-
CAS No.73736-50-2 (non-labelled)
Mol. F.C27H25D4FN4O
Mol. W.448.58
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ASOPRISNIL

O-Desmethyl-Asoprisnil

CAT No.-
CAS No.-
Mol. F.C27H33NO4
Mol. W.435.56
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ASOPRISNIL

O-Desmethyl-Asoprisnil-d4

CAT No.-
CAS No.-
Mol. F.C27H29D4NO4
Mol. W.439.59
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APREMILAST

O-Desmethyl Apremilast Glucuronide Sodium Salt

CAT No.-
CAS No.1384814-89-4 (freebase)
Mol. F.C27H29N2O13S. Na
Mol. W.621.60 22.99
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APIXABAN

O-Desmethyl Apixaban

CAT No.-
CAS No.503612-76-8
Mol. F.C24H23N5O4
Mol. W.445.48
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APIXABAN

O-Desmethyl Apixaban Sulfate

CAT No.-
CAS No.-
Mol. F.C24H23N5O7S
Mol. W.525.54
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ANILINE

o-Toluidine

CAT No.-
CAS No.95-53-4
Mol. F.C7H9N
Mol. W.107.16
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ALLOPURINOL

Oxypurinol-13C-15N2

CAT No.-
CAS No.-
Mol. F.13C C4H4N4O2
Mol. W.155.09
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