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Mass spectrometry of analogues of pyrimidine bases: 2‐ and 4‐alkylthio‐5‐halogenouracils
Author(s) -
Stobiecki Maciej
Publication year - 1986
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.1210210507
Subject(s) - fragmentation (computing) , electron ionization , metastability , uracil , pyrimidine , mass spectrometry , chemistry , mass spectrum , stereochemistry , dna , organic chemistry , chromatography , computer science , ion , biochemistry , ionization , operating system
The electron impact induced mass fragmentations of 16 new 2‐ and 4‐alkylthio‐5‐chloro‐ and 2‐ and 4‐alkylthio‐5‐bromouracils are presented. The elucidation of the fragmentation pathways is described. The fragmentation routes have been confirmed by accurate mass measurements and metastable transitions. It has been found that the position of uracil ring thiation may be deduced on the basis of the mass spectral fragmentation patterns.