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5-Bromo-4-chloro-7H-pyrrolo(2,3-d)pyrimidine

4,5-Dichloro-6-ethylpyrimidine

7H-imidazo(4,5-d)Pyrimidine

4-Chloro-5-iodo-7H-pyrrol(2,3-d)Pyrimidine

5-Chloro-6-ethylpyrimidin-4-ol

4-Amino-2-chloro-5-methylPyrimidine

2,5,6-Triaminopyrimidin-4-ol sulphate

4-Amino-6-chloro-2-methylPyrimidine

2,5-Diaminopyrimidine

4-(5-Nitropyridin-2-yl)morpholine

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