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5-Bromo-2-hydrazinopyrimidine

2,4,6-Trimethoxypyrimidine

2-Bromo-5-methylpyridine

3,5-Dibromopyridine

2,4-Diamino-6-mercaptopyrimidine

2,4-Dimethyl-6-hydroxypyrimidine

2-Mercapto-4-methylpyrimidine

(2-Pyrimidylthio)acetic acid

4-Hydroxypyrimidine

2,4-Dichloro-5-iodopyrimidine