DEA Designates ANPP as Immediate Precursor to Schedule II Controlled Substance Fentanyl

Summary

The Drug Enforcement Administration (DEA) is designating 4-anilino-N-phenethyl-4-piperidine (ANPP) as an immediate precursor to the Schedule II controlled substance fentanyl, aiming to curb its diversion in illicit fentanyl production. This move follows the 2005-2006 fentanyl-related overdose outbreak in the US, where ANPP was used by clandestine labs to manufacture the substance.