@article{oai:hama-med.repo.nii.ac.jp:00001690,
 author = {Ishii, Akira and Seno, Hiroshi and Watanabe, Kanako and Neal, Castagnoli Jr. and Inoue, Hiroyuki and Kumazawa, Takeshi and Suzuki, Osamu and Katsumata, Yoshinao and Suzuki, Kanako},
 issue = {3},
 journal = {法中毒, Japanese journal of forensic toxicology},
 month = {Sep},
 note = {Positive-ion electron impact (PIEI) , positive-ion chemical ionization (PICI), negative-ion chemical ionization (NICI) and surface ionization (SI) mass spectra of 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP) , 1-methyl-4-(2-pyrrolylphenyl)-1, 2, 3, 6-tetrahydropyridine, 1-methyl-4-(3-methoxyphenyl)-1, 2 ,3, 6-tetrahydropyridine and 1-methyl-4-(2-isopropylphenyl)-  1, 2, 3, 6-tetrahydropyridine, have been presented, and each fragmentation mode has been analyzed. In the PIEI mode, molecular ions appeared in all four compounds and three of them constituted the base peaks. In the PICI modes, intense [M]+ and [M+1]+ ions were observed; [M]+ ions were the base peaks for all compounds. In common with both PIEI and PICI modes, cleavages between the two ring structures were found. In the NICI mode, [M-1]- peaks constituted the base peaks, but were much less intense than in other modes. In the SI mode, single and intense [M-3]+ peaks appeared; these peaks are probably due to aromatization of the N-methyltetrahydropyridine ring. The detection limits for four compounds, obtained by total ion monitoring, in the PIEI, PICI, NICI and SI modes were 2.1-7.9,29-85,99-3500,0.33-1.1 pmol on-column, respectively.},
 pages = {195--202},
 title = {POSITIVE-ION, NEGATIVE-ION AND SURFACE IONIZATION MASS SPECTRA OF MPTP AND ITS DERIVATIVES},
 volume = {17},
 year = {1999}
}