Pharmaceutical Impurity Standards & Reference Standards

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

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PEPTIDE

BQ-123 [Cyclo(D-Trp-D-Asp-Pro-D-Val-Leu)]

CAT No.-
CAS No.136553-81-6
Mol. F.C31H42N6O7
Mol. W.610.71
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Isotope Labelled Compounds

BQ-123-d7

CAT No.-
CAS No.136553-81-6 (non-labelled)
Mol. F.C31H35D7N6O7
Mol. W.617.75
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Isotope Labelled Compounds

BQ-123-13C6-15N

CAT No.-
CAS No.136553-81-6 (non-labelled)
Mol. F.13C C256H42N515NO7
Mol. W.617.66
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Impurity Standards

Benzylpenicillin EP Impurity C Sodium Salt

CAT No.-
CAS No.5985-13-7
Mol. F.C16H17N2O5S. Na
Mol. W.349.39 22.99
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PENICILLIN

Benzyl Penicilloic Acid Mono-Sodium Salt (Mixtureof Diastereomers)

CAT No.-
CAS No.N/A
Mol. F.C16H19N2O5S. Na
Mol. W.351.40 22.99
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PENICILLIN

Benzyl Penicilloic Acid HCl (Mixture ofDiastereomers)

CAT No.-
CAS No.-
Mol. F.C16H20N2O5S. HCl
Mol. W.352.41 36.46
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PENICILLIN

Benzathine Diacetate

CAT No.-
CAS No.140-28-3 (free base)
Mol. F.C16H20N2. 2 C2H4O2
Mol. W.240.35 2 60.05
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Isotope Labelled Compounds

beta-Hydroxy-Pentanoic Acid-d5

CAT No.-
CAS No.10237-77-1 (non-d)
Mol. F.C5H5O3D5
Mol. W.123.16
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PARABEN

Benzyl 4-Hydroxybenzoate (Benzyl Paraben)

CAT No.-
CAS No.94-18-8
Mol. F.C14H12O3
Mol. W.228.25
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Impurity Standards

Butylparaben Impurity E

CAT No.-
CAS No.4247-02-3
Mol. F.C11H14O
Mol. W.194.23
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