We offer an extensive range of isotopically labelled reference standards for your pharmaceutical and veterinary research, analysis and screening needs including medications, antibiotics, anti-inflammatory and immunosuppresant products. We offer isotopically labelled reference standards of:

• Active pharmaceutical ingredients
• Metabolite and impurity products
• Degradation products and process impurities
• Inhibitor and receptor compounds
• Genotoxic impurities
• Related substances for pharmacopeial updates

Please see the reference materials listed below or enter a product code, CAS number, description or other keywords in the Search field below.

Please also see our other subcategories for stable isotopes for Clinical and Toxicology analyses plus stable isotopes of Amino acids, Carnitines, Steroids and Thyroxines.

We also offer many unlabelled native forms of pharmaceutical and veterinary reference standards. These can be found in our Pharmaceutical & Veterinary Compounds subcategory or by entering a product name, CAS number or other keywords in the main Search field at the top of any page.

If you are unable to locate the reference standard or the format you require, please contact us with your requirements, we will be delighted to help.