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4-Amino-3-fluoro-1,2-dihydropyridin-2-one

3-Fluoro-4-acetylpyridine

4-Bromo-2-chloro-5-methylpyridine

5-Cyano-1,6-dihydro-6-oxo-2-pyridinecarboxylic acid

4-Chloro-5-fluoro-2-pyridinecarboxylic acid

5-Chloro-3-fluoro-2-nitropyridine

2-Chloro-5-methyl-4-nitropyridine

2-Bromo-5-fluoro-3-pyridinecarboxylic acid

2-Amino-5-bromo-4-ethoxypyridine

4-Chloro-5-methyl-2-pyridinecarboxylic acid