PMID- 27362667 OWN - NLM STAT- MEDLINE DCOM- 20180309 LR - 20181202 IS - 1556-4029 (Electronic) IS - 0022-1198 (Linking) VI - 61 IP - 5 DP - 2016 Sep TI - Development of a Library Search-Based Screening System for 3,4-Methylenedioxymethamphetamine in Ecstasy Tablets Using a Portable Near-Infrared Spectrometer. PG - 1208-14 LID - 10.1111/1556-4029.13122 [doi] AB - This is the first report on development of a library search-based screening system for 3,4-methylenedioxymethamphetamine (MDMA) in ecstasy tablets using a portable near-infrared (NIR) spectrometer. The spectrum library consisted of spectra originating from standard substances as well as mixtures of MDMA hydrochloride (MDMA-HCl) and diluents. The raw NIR spectra were mathematically pretreated, and then, a library search was performed using correlation coefficient. To enhance the discrimination ability, the wavelength used for the library search was limited. Mixtures of MDMA-HCl and diluents were used to decide criteria to judge MDMA-positive or MDMA-negative. Confiscated MDMA tablets and medicinal tablets were used for performance check of the criteria. Twenty-two of 27 MDMA tablets were truly judged as MDMA-positive. Five false-negative results may be caused by compounds not included in the library. No false-positive results were obtained for medicinal tablets. This system will be a useful tool for on-site screening of MDMA tablets. CI - (c) 2016 American Academy of Forensic Sciences. FAU - Tsujikawa, Kenji AU - Tsujikawa K AD - National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba, 277-0882, Japan. tujikawa@nrips.go.jp. FAU - Yamamuro, Tadashi AU - Yamamuro T AD - National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba, 277-0882, Japan. FAU - Kuwayama, Kenji AU - Kuwayama K AD - National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba, 277-0882, Japan. FAU - Kanamori, Tatsuyuki AU - Kanamori T AD - National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba, 277-0882, Japan. FAU - Iwata, Yuko T AU - Iwata YT AD - National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba, 277-0882, Japan. FAU - Miyamoto, Kazuna AU - Miyamoto K AD - Biochemical Toxicology Laboratory, Faculty of Pharmaceutical Sciences, Kobegakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe, Hyogo, 650-8586, Japan. FAU - Kasuya, Fumiyo AU - Kasuya F AD - Biochemical Toxicology Laboratory, Faculty of Pharmaceutical Sciences, Kobegakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe, Hyogo, 650-8586, Japan. FAU - Inoue, Hiroyuki AU - Inoue H AD - National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba, 277-0882, Japan. LA - eng PT - Journal Article DEP - 20160630 PL - United States TA - J Forensic Sci JT - Journal of forensic sciences JID - 0375370 RN - 0 (Hallucinogens) RN - 0 (Tablets) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Hallucinogens/*analysis MH - N-Methyl-3,4-methylenedioxyamphetamine/*analysis MH - Spectrum Analysis/*methods MH - Tablets/chemistry OTO - NOTNLM OT - 3,4-methylenedioxymethamphetamine OT - ecstasy OT - forensic science OT - library search OT - near-infrared spectrometry OT - on-site screening EDAT- 2016/07/01 06:00 MHDA- 2018/03/10 06:00 CRDT- 2016/07/01 06:00 PHST- 2015/03/30 00:00 [received] PHST- 2015/11/01 00:00 [revised] PHST- 2015/11/14 00:00 [accepted] PHST- 2016/07/01 06:00 [entrez] PHST- 2016/07/01 06:00 [pubmed] PHST- 2018/03/10 06:00 [medline] AID - 10.1111/1556-4029.13122 [doi] PST - ppublish SO - J Forensic Sci. 2016 Sep;61(5):1208-14. doi: 10.1111/1556-4029.13122. Epub 2016 Jun 30.