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Classified as habit-forming.
An extremely potent fentanyl analog carrying significant overdose risk. Can cause potentially serious respiratory depression, which is life-threatening. Fentanyl analogs have killed thousands of people in Europe and the former Soviet republics since the early 2000s.
Parafluorofentanyl was originally developed by Janssen Pharmaceutica during the 1960s as part of their extensive research into fentanyl analogs. The compound appeared briefly on the illicit United States market in the early 1980s, notably predating the introduction of the Federal Analog Act, which…