Gas Chromatography Electron Ionization Mass Spectral Analysis of Thio Analogues of Pyrimidine Bases: 5-Bromo-2,4-di-o-(m- and p-) chloro- (bromo-)benzylthiouracils and 6-methyluracils
Scheme 1
Pathways of the EI mass fragmentation of the molecular ions M+•(a) of 1–12.