- ACP Chemicals, Inc. - A Canadian-based supplier of a wide range of stable isotopes along with other standard chemicals.
- Advanced Materials Technologies Ltd, - AMT, supplies stable isotopes, deuterated solvents and high purity materials for medical and chemical research.
- Alsachim - Supplier of stable labelled drugs and metabolites including custom synthesis of multilabelled building blocks.
- American Radiolabeled Chemicals Inc. - Offers more than 4,000 radiolabeled and unlabeled neurochemicals and biochemicals for life science research.
- Aptochem - Specialists in radiosynthesis, compound synthesis, bioanalysis and in custom synthesis of reference standards. Also specialists in analytical chemistry, including calculation of isotopic distribution.
- Center of Molecular Research - Representative of a Russian producer of Oxygen-18 water situated in Saint Petersburg
- Chemgas - Chemgas supplies high purity rare gases and isotopically enriched gases.
- CNL Scientific Resources, Inc. - A supplier of isotopes, metals, crystals and other engineered materials to manufacturers of pharmaceuticals and instruments.
- CortecNet: Stable Isotopes - Provides various stable isotope products including amino acids, fatty acids, carbohydrates, isotopic gases and metal isotopes.
- Hartmann Analytic GmbH - Supplier of radio-labeled chemicals, products for radiation protection. Also offers labeling-services and custom synthesis.
- Hyox18 - Isotope O18 enriched water used to produce fluoro-deoxyglucose for PET.
- Icon Services - Supplier of compounds labeled with stable isotopes.
- International Isotope Society - The IIS provides a forum for all chemists involved in radiochemical synthesis and analysis to obtain and share information outside of their immediate area of employment and expertise.
- International Isotopes Clearing House, Inc. - Catalog listing of radioisotopes, 14C- and 3H-labeled compounds for medical research, 33P- and 125I- available.
- Isoflex - Stable isotopes for use in science, medicine and industry from Russian producers.
- IsoSciences - Custom stable isotope labeling and small scale organic synthesis including the preparation of metabolites and PET precursors and standards.
- Isotec - A member of the Sigma-Aldrich family, manufacturer of stable isotope labeled compounds.
- Martek Biosciences - Suppliers of isotopically enriched biochemicals.
- MATRALAB: Radioactive Material Stock Control Application - MATRALAB is an easy-to-use software to control all radioactive material at a facility. In Spanish and English.
- MDS Nordion - Radioisotope technology used to prevent, diagnose and treat disease. Products and services include nuclear medicine, radiation therapy for cancer, irradiation sterilization and food irradiation.
- Moravek Radiochemicals - Manufacturer of tritium and carbon 14 labeled radiochemicals for AIDS and cancer research.
- Omicron Biochemicals Inc. - Supplier of single, multiple and uniform stable isotope labeled saccharides and nucleosides (13C, 2H, 15N, 18O).
- PicoTrace - Equipment for trace element and isotope analysis.
- RITVERC GmbH - A producer and worldwide supplier of radioisotope products for science, industry, and medicine. Product list includes radiation sources, labelled compounds, stable isotopes, and radiopreparations.
- Sigma-Aldrich - Suppliers of a wide range of isotopically-labeled products.
- Spectra Gases - Specialty gases for high technology markets. Our core business is pure gases and gas mixtures for excimer lasers and lamps. Isotopic en-richment of gases for research.
- STB Isotopes - Stable isotopes for science, medicine and industry, a list of some rare and unusual stable isotopes.
- Techsnabexport - Supplier of Russian-produced radioisotopes and labeled compounds.
- Trace Sciences International - Supplier of stable isotopes including a complete range of enriched stable isotopes.
- U.S. DOE Isotope Production and Distribution - U.S. Department of Energy isotopes catalog. Quite an extensive list.
- ViTrax Radiochemicals - Manufactures Tritium, Carbon-14, and Sulfur-35 radiolabeled products and offers custom radiosynthesis under cGMP.
- Wellington Laboratories - Produces 12C and 13C halogenated reference standards of environmental concern, including chlorinated and brominated dioxins, furans, biphenyls and diphenyl ethers. Includes corporate and product details, online catalog and contacts.
