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1H-Pyrazole-4-carboxylic acid

2-Amino-4-morpholino-6-methylpyrimidine

1,3-Dimethyl-5-bromoorotic acid

4-Amino-2-chloro-5-fluoropyrimidine

5-Bromocytosine

2-Amino-4-piperidino-6-methylpyrimidine

2-Amino-4-phenoxy-6-methylpyrimidine

2-Amino-5-bromo-4-hydroxy-6-phenylpyrimidine

2-Amino-6-fluoro-4-hydrazinopyrimidine

2-Amino-4-fluoro-6-phenoxypyrimidine

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