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5-Bromo-6-hydroxynicotinic acid

5-Chloro-2-hydroxynicotinic acid

2-Chloro-6- hydrazinopyridine

3-Amino-4-pyridinecarboxylic acid methyl ester

3-Amino-4-pyridinecarboxylic acid ethyl ester

2-Amino-3-bromo-5-methylpyridine

5-Methylnicotinoyl chloride

6-Chloro-2-picolinic acid methyl ester

5-Bromo-2,3-dichloropyridine

4-Iodo-2-methoxypyridine-3-carboxaldehyde