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2-Hydroxy-4-thiopyrimidine

4,6-Dihydroxy-5-nitropyrimidine

4,6-Diamino-2-mercaptopyrimidine

2,4-Dihydroxy-5-methoxypyrimidine

2-Hydroxy-4-hydrazinopyrimidine

2-Morpholino-4,6-difluoropyrimidine

4-Amino-2,6-difluoropyrimidine

2-Chloro-4-(methylthio)pyrimidine

4-Chloro-2-methylthiopyrimidine

5-Hexynechloride

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