Cerilliant Corporation, located in Round Rock, Texas, provides chemical reference materials and custom chemical services to a diverse group of industries, including private and government laboratories and research institutes. The company began producing chemical reference materials in 1979 to address needs in the environmental analysis industry. Cerilliant was first to produce 13C labeled chlorinated Dioxins and Furans, and the first to offer isotope-labeled Drugs-of-Abuse standards in the mid-1980's to meet the increasing demand for isotope-labeled reference materials. It also offers custom synthesis and services to a diverse group of industries, including the pharmaceutical industry, where it has the capability to produce materials under cGMP requirements.