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4,6-Dihydroxynicotinic acid ethyl ester

2,5-Dichloro-4-formylpyridine

2,3-Dichloro-4-formylpyridine

2,3-Dibromo-5-nitropyridine

5-Cyano-2-picoline

3-Cyano-4,6-dimethyl-2-pyridone

5-Chloro-2-methylpyridine

2-Chloro-4-nitropyridine-N-oxide

2-Hydroxy-3-chloropyridine

5-Bromo-2-methoxy-4-picoline