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2-Amino-3-bromo-6-methoxypyrazine

2-Bromo-3-chloropyrazine

2-Bromo-3-methoxypyrazine

3-Chloro-6-methoxy-2-pyrazinamine

2,5-Dichloro-3-hydroxypyridine

5-Bromo-2-chloro-3-hydroxy-4-methylpyridine

2,5-Dibromo-3-benzyloxypyridine

5-Bromo-2-chloro-3-benzyloxypyridine

5-Chloro-1-methyl-4-nitro-1h-pyrazole

4-Iodo-1-methyl-1h-pyrazole-5-