Supplier of stable labelled drugs and metabolites including custom synthesis of multilabelled building blocks.

Offers more than 4,000 radiolabeled and unlabeled neurochemicals and biochemicals for life science research.

Specialists in radiosynthesis, compound synthesis, bioanalysis and in custom synthesis of reference standards. Also specialists in analytical chemistry, including calculation of isotopic distribution.

Supplier of radio-labeled chemicals, products for radiation protection. Also offers labeling-services and custom synthesis.

Supplier of compounds labeled with stable isotopes.

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.

Stable isotopes for use in science, medicine and industry from Russian producers.

Custom stable isotope labeling and small scale organic synthesis including the preparation of metabolites and PET precursors and standards.

Manufacturer of tritium and carbon 14 labeled radiochemicals for AIDS and cancer research.

Supplier of single, multiple and uniform stable isotope labeled saccharides and nucleosides (13C, 2H, 15N, 18O).

A producer and worldwide supplier of radioisotope products for science, industry, and medicine. Product list includes radiation sources, labelled compounds, stable isotopes, and radiopreparations.

Stable isotopes for science, medicine and industry, a list of some rare and unusual stable isotopes.

Supplier of Russian-produced radioisotopes and labeled compounds.

Supplier of stable isotopes including a complete range of enriched stable isotopes.

Manufactures Tritium, Carbon-14, and Sulfur-35 radiolabeled products and offers custom radiosynthesis under cGMP.

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.