Fentanyl and Fentanyl Analogues: Federal Trends and Trafficking Patterns Posted on November 17, 2021December 10, 2021 By Jeff Teitelbaum Kristin M. Tennyson, Ph.D., Charles S. Ray, J.D., Kevin T. Maass, M.A.United States Sentencing Commission; 60pp; 2021Download report Chemistry, Seized Drugs/Controlled Substances