Mass spectrometric study of some 4‐pyrimidine carboxylic acids

Abstract
Mass spectrometry has been applied in order to study the main fragmentation routes of some 4-pyrimidene carboxylic acids. Differences in fragmentation were caused by the nature of the substituent in position 2 of the pyrimidine ring, while the methyl group in position 1, 3 or 6 did not influence the fragmentation route. Copyright © 2002 John Wiley & Sons, Ltd.