Drug Standards

Controlled Drug Standards Including Stable Isotope Labeled Standards

Isotopically labeled drugs are an ideal interal standard for drug screening with a mass spectrometer. The isotopically labeled drug exhibits similar chemical behavior to its unlabeled analog through the sample handling process. However, when used with a GC/MS, for example, the m/z difference due to the presence of the isotope will allow for accurate identification and quantification of the suspected drug in the specimen.

Stable Isotope Home Page

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610577 (±)-Cotinine-(methyl-d3) solution 99 atom % D, 1 mg/mL in methanol, drug standard
608653 cis-Tamoxifen-15N-(N,N-dimethyl-13C2) 99 atom % 13C, 98 atom % 15N
605913 Tamoxifen-(N,N-dimethyl-13C2) 99 atom % 13C
608645 Tamoxifen-(N,N-dimethyl-13C2)-15N 99 atom % 15N, 99 atom % 13C, 99% (CP)