Stable Isotopes

Our stable isotope-labelled standards, including deuterated, 13C, and 15N-labelled compounds, are fundamental tools in bioanalytical methods. These isotopes offer unparalleled precision for the quantification and tracking of APIs, metabolites, and impurities. Widely used as internal standards in pharmacokinetic studies, they enhance the accuracy and sensitivity of analytical protocols, making them indispensable in drug development, metabolic research, and environmental studies. Trusted by researchers and bioanalytical laboratories worldwide, our stable isotope standards are recognized for their purity and consistency.
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299 items

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  • Inquire
    SI050181: Ethosuximide-d5

    SI050181

    Ethosuximide-d5
  • In Stock
    SI060020: Febuxostat-d9

    SI060020

    Febuxostat-d9
  • In Stock
    SI060029: Felodipine-d5

    SI060029

    Felodipine-d5
  • In Stock
    SI060030: rac-Fesoterodine-d7.HCl

    SI060030

    rac-Fesoterodine-d7.HCl
  • In Stock
    SI060031: rac-Fesoterodine-d14.HCl

    SI060031

    rac-Fesoterodine-d14.HCl
  • In Stock
    SI060040: Fexofenadine-d10.HCl

    SI060040

    Fexofenadine-d10.HCl
  • In Stock
    SI060050: Finasteride-d9

    SI060050

    Finasteride-d9
  • In Stock
    SI060060: Fingolimod Phosphate

    SI060060

    Fingolimod Phosphate
  • In Stock
    SI060061: Fingolimod Phosphate-d4

    SI060061

    Fingolimod Phosphate-d4
  • In Stock
    SI060062: Fingolimod-d4.HCl

    SI060062

    Fingolimod-d4.HCl
  • In Stock
    SI060080: Flupirtine-d4.HCl

    SI060080

    Flupirtine-d4.HCl
  • In Stock
    SI060090: Fluvoxamine-d3 Maleate

    SI060090

    Fluvoxamine-d3 Maleate
  • In Stock
    SI060091: Fluvoxamine-d4 Maleate

    SI060091

    Fluvoxamine-d4 Maleate
  • Inquire
    SI060100: Frovatriptan-d3

    SI060100

    Frovatriptan-d3
  • In Stock
    SI060101: Frovatriptan-d3.HCl

    SI060101

    Frovatriptan-d3.HCl
  • In Stock
    SI060110: Fulvestrant-d3

    SI060110

    Fulvestrant-d3
  • In Stock
    SI060120: Felbamate-d4

    SI060120

    Felbamate-d4
  • In Stock
    SI060121: Felbamate-d5

    SI060121

    Felbamate-d5
  • Inquire
    SI060130: Fedratinib-d4

    SI060130

    Fedratinib-d4
  • In Stock
    SI060131: Fedratinib-d8

    SI060131

    Fedratinib-d8
  • Inquire
    SI060151: Fosaprepitant-d4 Dimeglumine

    SI060151

    Fosaprepitant-d4 Dimeglumine
  • In Stock
    SI070010: Gefitinib-d8

    SI070010

    Gefitinib-d8
  • Inquire
    SI070020: Glipizide-d11

    SI070020

    Glipizide-d11
  • In Stock
    SI070030: Guanfacine-13C 15N3.HCl

    SI070030

    Guanfacine-13C 15N3.HCl