The Utah State Crime Laboratory (Salt Lake City) recently received an unusual submission of two vials of a yellow crystalline substance, reputed etonitazene (a narcotic analgesic) (see Photo 9). The exhibits were acquired by the Box Elder County Strike Force from a professional chemist working in a commercial laboratory in Brigham City (located in northern Utah). Since this substance has not been previously encountered in Utah, and in fact has rarely been seen in the U.S., the laboratory did not have a standard for comparison. Analysis by GC/MS and FTIR (see spectra, next page) tentatively identified etonitazene, which led to the arrest of the chemist. The DEA Western Laboratory (San Francisco) later confirmed that the sample was pure etonitazene, based on NMR analysis.