American Radiolabeled Chemical (ARC) ^*

Manufacturer of radioactive chemicals as well as OEM producer for Perkin Elmer.

http://arc-inc.com/

Moravek Biochemicals (MB) ^*

Since 1975 MB has been engaged in the manufacture of radiochemicals, stable isotope labeled and unlabeled compounds.

http://www.moravek.com/

Sigma-Aldrich^*

Sigma-Aldrich is a leading Life Science and High Technology company. Their biochemical and organic chemical products and kits are used in scientific and genomic research, biotechnology, pharmaceutical development, the diagnosis of disease and as key components in pharmaceutical and other high technology manufacturing.

https://www.sigmaaldrich.com/