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3-Chloro-6-methyl-2(1h)-pyrazinone

5-Bromo-3-methoxy-2(1h)-pyrazinone

3-Chloro-6-methyl-2-pyrazinamine

2,3-Dimethyl-5-hydroxypyrazine

2,3-Dichloro-5,6-dimethylpyrazine

3,5-Dimethoxy-2-pyrazinamine

3-Amino-5-methyl-6-hydroxypyridazine

4-Chloro-3,5,6-trimethyl-pyridazine

3,4-Dichloro-6-methyl-pyridazine

3-Chloro-6-methoxy-pyridazine 2-oxide

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