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Fragmentation of dihydro‐ and tetrahydro‐1,5‐benzothiazepines under electron impact
Author(s) -
WenGang Chai,
GuangHui Wang,
Sheng Jin,
HengLiang Jin
Publication year - 1980
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210151210
Subject(s) - fragmentation (computing) , electron ionization , benzothiazole , ion , mass spectrum , metastability , deuterium , chemistry , electron , mass spectrometry , analytical chemistry (journal) , atomic physics , physics , nuclear physics , organic chemistry , computer science , chromatography , ionization , operating system
The fragmentation mechanisms of dihydro‐ and tetrahydro‐1,5‐benzothiazepines under electron impact have been studied in detail using high resolution mass spectrometry, metastable decompositions and deuterium labelling techniques. Both kinds of the benzothiazepines possess high stability. The [MSH] + and the cyclic benzothiazole ions derived from the fragmentation and severe skeletal rearrangement of the molecular ion comprised the main features of the spectra. Some doubly charged ions were noticed in the low resolution electron impact mass spectra.