Similar to: MDPVTypical dosage: 20-50mgR,S-3',4'-Methylenedioxy-alpha-pyrrolidinopropiophenone (MDPPP) is a
new designer drug with assumed amphetamine-like effects, which has
appeared on the illicit drug market. The aim of this study was to
identify the MDPPP metabolites using solid-phase extraction,
ethylation or acetylation as well as to develop a toxicological
detection procedure in urine using solid-phase extraction,
trimethylsilylation and GC-MS. Analysis of urine samples of rats
treated with MDPPP revealed that MDPPP was completely metabolized by
demethylenation of the methylenedioxy group followed by partial 3'-
methylation of the resulting catechol, oxidative desamination to the
corresponding diketo compounds and/or hydroxylation of the
pyrrolidine ring with subsequent dehydrogenation to the corresponding
lactam. The hydroxy groups were found to be partly conjugated. Based
on these data, MDPPP could be detected in urine via its metabolites
by full-scan GC-MS using mass chromatography for screening and
library search for identification by comparison of the spectra with
reference spectra
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