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Role of different 5-substituents on the mass spectrometric behaviour of uracil

✍ Scribed by Donata Favretto; Pietro Traldi; Eloisa Celon; Giuseppe Resnati

Publisher: John Wiley and Sons
Year: 1993
Tongue: English
Weight: 383 KB
Volume: 28
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210281032

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✦ Synopsis

The influence of different 5-substituents on the mass spectrometric behaviour of uracil was systematically studied by means of mass-analysed ion kinetic energy spectrometry. By applying this technique to the molecular ions and the major primary product ions formed by loss of HNCO, the electron impact-induced fragmentation patterns of a series of substituted uracils could be elucidated. In addition to the common decomposition processes, distinctive fragmentation routes were identified for some compounds, and a rationale for the observed behaviour is given based on the electronic properties of the substituents.

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