3-(Difluoromethyl)-5-hydroxy-4-nitropyridine-2-sulfonyl chloride
2-(Difluoromethyl)-3,5-dimethoxypyridine-4-acetic acid
Methyl 4-bromo-5-cyano-3-(difluoromethyl)pyridine-2-carboxylate
5-Iodo-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride
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