Pharmaceutical Impurity Standards & Reference Standards

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

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All 2,841
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VALINE

L-Valine

CAT No.-
CAS No.72-18-4
Mol. F.C5H11NO2
Mol. W.117.15
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URIDINE

L-Uridine-5'-Monophosphoric Acid

CAT No.-
CAS No.-
Mol. F.C9H13N2O9P
Mol. W.324.18
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TYROSINE

L-Tyrosine

CAT No.-
CAS No.60-18-4
Mol. F.C9H11NO3
Mol. W.181.19
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Isotope Labelled Compounds

L-Tyrosine-13C9

CAT No.-
CAS No.60-18-4 (non-labelled)
Mol. F.C9H11NO3
Mol. W.190.09
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TYROSINE

L-Tyrosine benzyl ester

CAT No.-
CAS No.5299-86-7
Mol. F.C16H17NO3
Mol. W.271.32
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TRYPTOPHAN

L-Tryptophan

CAT No.-
CAS No.73-22-3
Mol. F.C11H12N2O2
Mol. W.204.23
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TIROPRAMIDE

L-2-Aminomethyl-1-ethyl-pyrrolidine

CAT No.-
CAS No.-
Mol. F.C7H16N2
Mol. W.128.22
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Impurity Standards

Levothyroxine Impurity 41

CAT No.-
CAS No.-
Mol. F.C28H16I7NO7
Mol. W.1366.77
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Impurity Standards

Levothyroxine Impurity 42

CAT No.-
CAS No.-
Mol. F.C29H17I8NO8
Mol. W.1522.69
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Impurity Standards

Levothyroxine Impurity 43

CAT No.-
CAS No.-
Mol. F.C29H17I8NO8
Mol. W.1522.69
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