4-Bromo-2-hydroxybenzoic acid

5-Nitro-6-methyluracil

4,6-Dihydroxy-5-methoxypyrimidine

4,6-Dichloro-5-methoxypyrimidine

4,6-Diaminopyrimidine

2,4-Dichloro-5-methylpyrimidine

2-Chloro-5-fluoropyrimidine

2-Bromo-4-methylpyrimidine

5,6-Dimethoxybenzimidazole