Pharmaceutical Impurity Standards & Reference Standards

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

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Isotope Labelled Compounds

Hydroxy Tipelukast-d6 Sodium Salt

CAT No.-
CAS No.-
Mol. F.C29H33O7SD6. Na
Mol. W.537.73 22.99
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TIPELUKAST

Hydroxy Tipelukast Sodium Salt

CAT No.-
CAS No.1027597-04-1 (freeacid)
Mol. F.C29H39O7S. Na
Mol. W.531.69 22.99
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TIMOLOL

Hydroxy Timolol

CAT No.-
CAS No.-
Mol. F.C13H24N4O4S
Mol. W.332.42
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TETRABENAZINE

Hydroxy Tetrabenazine (Mixture of cis and transIsomers)

CAT No.-
CAS No.3466-75-9
Mol. F.C19H29NO3
Mol. W.319.45
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SULFENTRAZONE

Hydroxy Sulfentrazone

CAT No.-
CAS No.134390-99-1
Mol. F.C11H10Cl2F2N4O4S
Mol. W.403.19
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Isotope Labelled Compounds

Homo Sildenafil-d5

CAT No.-
CAS No.-
Mol. F.C23H27N6O4SD5
Mol. W.493.64
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SILDENAFIL

Hydroxythio Acetildenafil

CAT No.-
CAS No.1159977-47-5
Mol. F.C25H34N6O3S
Mol. W.498.65
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Isotope Labelled Compounds

Hydroxyhongdenafil-d4 (Hydroxy Acetidenafil-d4)

CAT No.-
CAS No.147676-56-0 (non-d)
Mol. F.C25H30N6O4D4
Mol. W.486.61
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Isotope Labelled Compounds

Hydroxythiohomosildenafil-d4

CAT No.-
CAS No.-
Mol. F.C23H28N6O4S2D4
Mol. W.524.70
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Isotope Labelled Compounds

Homosildenafil-d5

CAT No.-
CAS No.-
Mol. F.C23H27N6O4SD5
Mol. W.493.64
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