Gas Chromatography Electron Ionization Mass Spectral Analysis of Thio Analogues of Pyrimidine Bases: 5-Bromo-2,4-di-<i>o</i>-(<i>m</i>- and <i>p</i>-) chloro- (bromo-)benzylthiouracils and 6-methyluracils

<table>GC-EI mass spectra  of: (a) 5-bromo-2,4-di-(<i>ortho</i>-chlorobenzylthio)-6-methyluracil <b>7</b>,  retention time 36.983 min; (b) 5-bromo-2,4-di-(<i>para</i>-bromobenzylthio)-6-methyluracil <b>12</b>, retention time 57.366 min.</table>

International Journal of Spectroscopy

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Figure 2

Figure 2: Gas Chromatography Electron Ionization Mass Spectral Analysis of Thio Analogues of Pyrimidine Bases: 5-Bromo-2,4-di-<i>o</i>-(<i>m</i>- and <i>p</i>-) chloro- (bromo-)benzylthiouracils and 6-methyluracils 

Figure 2 | 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 