Study of the in vitro and in vivo metabolism of the tryptamine 5‐MeO‐MiPT using human liver microsomes and real case samples
Drug Testing and Analysis July 5, 2017 Katharina Elisabeth Grafinger, Marianne Hädener, Stefan König et al. 31 citations
The synthetic tryptamine 5-MeO-MiPT, a hallucinogenic drug recently abused in Germany and Switzerland, was identified in a case of intoxication involving a naked, agitated, and aggressive man. Metabolites were characterized in pooled human liver microsomes, blood, and urine using LC–HRMS/MS. Seven phase I metabolites were found in vitro; four in blood and seven in urine. The most abundant metabolites resulted from demethylation and hydroxylation. Blood concentration was 160 ng/mL; urine concentration was 3380 ng/mL. Cocaine, cocaethylene, methylphenidate, and ritalinic acid were also detected in urine. Four metabolites—5-MeO-NiPT, 5-OH-MiPT, 5-MeO-MiPT-N-oxide, and OH-5-MeO-MiPT—are recommended as biomarkers for detecting consumption.