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Mass spectra of picolinic, nicotinic and isonicotinic acids and of their respective N ‐oxides
Author(s) -
de Oliveira Silvana M.,
de Giovani Wagner F.,
Romero José Ricardo,
Miller Joseph
Publication year - 1991
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.1210261009
Subject(s) - isonicotinic acid , picolinic acid , chemistry , fragmentation (computing) , oxide , inorganic chemistry , mass spectrum , ion , nicotinic acids , nicotinic agonist , organic chemistry , biochemistry , hydrazide , receptor , computer science , operating system
Mass spectra of picolinic, nicotinie and isonicotinie acids and of their respective N ‐oxides are presented. Picolinic acid and its N ‐oxide demonstrate the facile loss of carbon dioxide and low‐intensity molecular ions. Fragmentation is relatively simple. Nicotiuic and isonicotinic acids show very similar fragmentation patterns. For both, the molecular ion is the base peak. The fragmentations of nicotinic acid N‐oxide and of isonicotinic acid N ‐oxide are more complex than those of the previous four compounds, but are similar to each other.