Pharmaceutical Impurity Standards & Reference Standards

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

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ERLOTINIB

Erlotinib Impurity 2 (4-Chloro-7-(2-Chloroethoxy)- 6-(2-Methoxyethoxy)-Quinazoline)

CAT No.-
CAS No.183322-20-5
Mol. F.C13H14Cl2N2O3
Mol. W.317.17
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ERLOTINIB

Erlotinib O-Desmethyl Metabolite Isomer (M13)

CAT No.-
CAS No.183320-29-8
Mol. F.C21H21N3O4
Mol. W.379.42
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ERGOSTANOL

Ergostanol

CAT No.-
CAS No.6538-02-9
Mol. F.C28H50O
Mol. W.402.71
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ERGOTAMINE

Ergotamine

CAT No.-
CAS No.113-15-5
Mol. F.C33H35N5O5
Mol. W.581.68
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ERGOTAMINE

Ergotamine Impurity 1

CAT No.-
CAS No.-
Mol. F.C33H41N5O5
Mol. W.587.73
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ERGOTAMINE

Ergotamine Impurity 2

CAT No.-
CAS No.2410-19-7
Mol. F.C16H19N3O
Mol. W.269.35
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ERIBULIN

Eribulin

CAT No.-
CAS No.253128-41-5
Mol. F.C40H59NO11
Mol. W.729.92
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ERIBULIN

Eribulin Impurity 1

CAT No.-
CAS No.185411-12-5
Mol. F.C9H18O2Si
Mol. W.186.33
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EQUILIN

Equilin 3-Sulfate Sodium Salt

CAT No.-
CAS No.16680-47-0
Mol. F.C18H19O5S. Na
Mol. W.347.41 22.99
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EQUILIN

Equilin

CAT No.-
CAS No.474-86-2
Mol. F.C18H20O2
Mol. W.268.36
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