Phenethylamine-derived new psychoactive substances 2C-E-FLY, 2C-EF-FLY, and 2C-T-7-FLY: Investigations on their metabolic fate including isoenzyme activities and their toxicological detectability in urine screenings.
Drug testing and analysis October 1, 2019 Lea Wagmann, Nora Hempel, Lilian H J Richter et al. 20 citations
Three new psychoactive substances of the 2C-FLY series—2C-E-FLY, 2C-EF-FLY, and 2C-T-7-FLY—were studied to determine how the body metabolizes them and how they can be detected in toxicological tests. Using rat urine and human liver S9 fractions analyzed by LC-HRMS/MS, 32 metabolites were identified. Main metabolic steps were hydroxylation and N-acetylation, catalyzed by CYP2D6, CYP3A4, FMO3, NAT1, and NAT2. Deamination by MAO-A and B was also observed. Polymorphisms or drug interactions may cause interindividual differences. Standard urine screening approaches using GC-MS, LC-MSn, and LC-HRMS/MS were suitable for detecting intake, but common metabolites of 2C-E-FLY and 2C-EF-FLY must be considered when interpreting results.