title: Chiral separation of 3,4-methylenedioxymeth- amphetamine and related compounds in clandestine tablets and urine samples by capillary electrophoresis/fluorescence spectroscopy.
abstract: The R-(-)- and S-(+)-isomers of 3,4-methylenedioxymethamphetamine (MDMA) and its metabolite 3,4-methylenedioxyamphetamine (MDA) were prepared, identified by gas chromatography/mass spectrometry (GC/MS) and then used as standards in a series of capillary electrophoresis (CE) experiments. Using these R-(-)- and S-(+)-isomers, the distribution of (RS)-MDA and (RS)-MDMA stereoisomers in clandestine tablets and suspect urine samples were identified. Several electrophoretic parameters, such as the concentration of beta-cyclodextrin used in the electrophoretic separation and the amount of organic solvents required for the separation, were optimized.
authors.affiliation: Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan.
authors.forename: Yu-San
authors.initials: YS
authors.lastname: Huang
authors.forename: Ju-Tsung
authors.initials: JT
authors.lastname: Liu
authors.forename: Li-Chang
authors.initials: LC
authors.lastname: Lin
authors.forename: Cheng-Huang
authors.initials: CH
authors.lastname: Lin
mesh_terms: D015198:Designer Drugs / Q000737:chemistry / Q000302:isolation & purification; D019075:Electrophoresis, Capillary / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D018817:N-Methyl-3,4-methylenedioxyamphetamine / Q000031:analogs & derivatives / Q000302:isolation & purification* / Q000652:urine*; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013607:Tablets / Q000737:chemistry*; D016482:Urinalysis / Q000379:methods*
chemical_list: D015198:Designer Drugs; D013607:Tablets; D018817:N-Methyl-3,4-methylenedioxyamphetamine