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Metabolic N ‐oxidation of 3‐substituted pyridines: Identification of products by mass spectrometry
Author(s) -
Cowan David A.,
Damani Lyaquatali A.,
Gorrod John W.
Publication year - 1978
Publication title -
biomedical mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0306-042X
DOI - 10.1002/bms.1200050909
Subject(s) - isoquinoline , chemistry , mass spectrometry , quinoline , mass spectrum , ion , chromatography , thermal decomposition , analytical chemistry (journal) , organic chemistry
The mass spectral characteristics of the N ‐oxides of a range of 3‐substituted pyridines, and of quinoline and isoquinoline, are described. The molecular ion is the base peak in the majority of cases, provided that thermolysis is minimized when using the direct probe or gas chromatograph inlets. Chromatographic and mass spectral evidence is presented which indicates that biological oxidation of the heteroaromatic nitrogen of 3‐substituted pyridines is a route of metabolism in vivo and in vitro .