Analysis of 3,4-methylenedioxymethamphetamine (MDMA) and its metabolites in plasma and urine by HPLC-DAD and GC-MS.
In Europe, the compound 3,4-methylenedioxymethamphetamine (MDMA, Ecstasy, Adam), in addition to cannabis, is the most abused illicit drug at all-night "techno" parties. Methods for the determination of MDMA and its metabolites, 4-hydroxy-3-methoxymethamphetamine (HMMA), 3,4-dihydroxy-methamphetamine (HHMA), 3,4-methylenedioxyamphetamine (MDA), 4-hydroxy-3-methoxyamphetamine (HMA), and 3,4-dihydroxyamphetamine (HHA), in biological fluids were established. Plasma and urine samples were collected from two patients in a controlled clinical study over periods of 9 and 22 h, respectively. MDMA and MDA were determined in plasma and urine by reversed-phase high-performance liquid chromatography with diode array detection (HPLC-DAD) after solid-phase extraction on cation-exchange columns. Acidic or enzymatic hydrolysis was necessary to detect HMMA, HMA, HHMA, and HHA, which are mainly excreted as glucuronides. Gas chromatography-mass spectrometry (GC-MS) was used for confirmation. Sample extraction and on-disc derivatization with heptafluorobutyric anhydride (HFBA) were performed on Toxi-Lab SPEC solid-phase extraction concentrators. After administration of a single oral dose of 1.5 mg/kg body weight MDMA, peak plasma levels of 331 ng/ml MDMA and 15 ng/mL MDA were measured after 2 h and 6.3 h, respectively. Peak concentrations of 28.1 micrograms/mL MDMA in urine appeared after 21.5 h. Up to 2.3 micrograms/mL MDA, 35.1 micrograms/mL HMMA, and 2.1 micrograms/mL HMA were measured within 16-21.5 h. Conjugated HMMA and HHMA are the main urinary metabolites of MDMA.
Helmlin
H J
HJ
Institute of Pharmacy, University of Bern, Switzerland.
Bracher
K
K
Bourquin
D
D
Vonlanthen
D
D
Brenneisen
R
R
D015104:3,4-Methylenedioxyamphetamine / Q000097:blood / Q000652:urine; D000284:Administration, Oral; D000293:Adolescent; D000328:Adult; D002851:Chromatography, High Pressure Liquid; D003846:Deoxyepinephrine / Q000031:analogs & derivatives / Q000097:blood / Q000652:urine; D005260:Female; D005466:Fluorocarbons / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D006213:Hallucinogens / Q000008:administration & dosage / Q000097:blood* / Q000652:urine; D006801:Humans; D006868:Hydrolysis; D007475:Ion Exchange Resins / Q000737:chemistry; D008297:Male; D008694:Methamphetamine / Q000031:analogs & derivatives / Q000097:blood / Q000652:urine; D018817:N-Methyl-3,4-methylenedioxyamphetamine / Q000008:administration & dosage / Q000097:blood* / Q000652:urine; D012015:Reference Standards
D005466:Fluorocarbons; D006213:Hallucinogens; D007475:Ion Exchange Resins; C079646:4-hydroxy-3-methoxymethamphetamine; C069512:alpha-methylepinine; C007924:heptafluorobutyric anhydride; D008694:Methamphetamine; D015104:3,4-Methylenedioxyamphetamine; C023492:alpha-methyldopamine; D018817:N-Methyl-3,4-methylenedioxyamphetamine; D003846:Deoxyepinephrine