Pharmaceutical Impurity Standards & Reference Standards

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

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Isotope Labelled Compounds

Hypoxanthine-13C-15N2

CAT No.-
CAS No.-
Mol. F.C5H4N4O2
Mol. W.155.09
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VITAMIN

Hydroxocobalamin Chloride

CAT No.-
CAS No.58288-50-9
Mol. F.C62H89CoN13O15P HCl
Mol. W.1382.82 36.46
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VITAMIN

Hydroxocobalamin Acetate (Vitamin B12 Analog)

CAT No.-
CAS No.22465-48-1
Mol. F.C64H91CoN13O16P
Mol. W.1388.42
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VILDAGLIPTIN

Hydroxy Vildagliptin

CAT No.-
CAS No.-
Mol. F.C17H25N3O3
Mol. W.319.41
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VARDENAFIL

Hydroxythio Vardenafil

CAT No.-
CAS No.912576-30-8
Mol. F.C23H32N6O4S2
Mol. W.520.67
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VARDENAFIL

Hydroxy Vardenafil

CAT No.-
CAS No.224785-98-2
Mol. F.C23H32N6O5S
Mol. W.504.61
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Impurity Standards

Hydroxy Urea Impurity 1

CAT No.-
CAS No.-
Mol. F.C2H3N3O3
Mol. W.117.06
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Isotope Labelled Compounds

Hydroxy Urea-15N2-13C

CAT No.-
CAS No.127-07-1 (un-labelled)
Mol. F.CH4N2O2
Mol. W.79.03
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UREA

Hydroxy Urea

CAT No.-
CAS No.127-07-1
Mol. F.CH4N2O2
Mol. W.76.06
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UREA

Hydantoic Acid (N-Carboxymethylurea)

CAT No.-
CAS No.462-60-2
Mol. F.C3H6N2O3
Mol. W.118.09
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