iZotope

Cambridge Isotope Laboratories, Inc. (CIL) is a global leader in the production of stable isotopes and stable isotope-labeled compounds. Founded in 1981 and headquartered in Tewksbury, Massachusetts, CIL operates laboratories in four countries and employs over 400 people. As a subsidiary of Otsuka Pharmaceutical, the company generates approximately $316 million in annual revenue.

CIL specializes in labeling biochemical and organic compounds with nonradioactive isotopes of carbon, hydrogen, nitrogen, and oxygen. Its products are essential for various research applications in pharmaceuticals, chemical analysis, and environmental studies. CIL serves a diverse range of industries, including pharmaceutical and biotechnology companies, academic institutions, and government research organizations, providing critical support for drug development, metabolic studies, and biochemical analysis.