Cambridge Isotope Laboratories, Inc. produces stable isotope labeled compounds. It offers deuterated NMR solvents, gases, amino acids, Bio-Express Cell Growth Media, forensic standards, RNA/DNA products, metabolites, fatty acids, sugars, metals, NMR reference standards, buffers and environmental contaminant standards. The company was founded by Joel C. Bradley in 1981 and is headquartered in Tewksbury, MA.