title: Simultaneous determination of bromvalerylurea and allylisopropylacetylurea in human blood and urine by gas chromatography-mass spectrometry.
abstract: We devised a sensitive and simple method to simultaneously determine bromvalerylurea and allylisopropylacetylurea in human blood and urine by gas chromatography-mass spectrometry. Bromvalerylurea and allylisopropylacetylurea were extracted using an Extrelut column with an internal standard, 2-bromohexanoylurea, followed by derivatization with heptafluorobutyric anhydride. The derivatized extract was submitted to GC-MS analysis of EI-SIM mode. The calibration curves of both compounds were linear in the concentration range from 0.01 to 10 microg/ml in both blood and urine samples. The lower limits of detection of bromvalerylurea and allylisopropylacetylurea were 0.005 and 0.005 microg/ml, respectively. This method proved most useful in accurately identifying these drugs in blood and urine from an autopsied individual.
authors.affiliation: Department of Forensic Pathology and Sciences, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
authors.forename: Keiko
authors.initials: K
authors.lastname: Kudo
authors.forename: Akiko
authors.initials: A
authors.lastname: Kiyoshima
authors.forename: Yukio
authors.initials: Y
authors.lastname: Ohtsuka
authors.forename: Noriaki
authors.initials: N
authors.lastname: Ikeda
mesh_terms: D001968:Bromisovalum / Q000097:blood* / Q000652:urine*; D002138:Calibration; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006801:Humans; D012015:Reference Standards; D014508:Urea / Q000031:analogs & derivatives* / Q000097:blood* / Q000652:urine*
chemical_list: D001968:Bromisovalum; D014508:Urea; C005700:apronalide