Ethyl 5-bromo-4-(chloromethyl)-2-(difluoromethyl)pyridine-3-carboxylate
3-Chloro-2-cyano-6-(difluoromethyl)pyridine-4-sulfonyl chloride
3-Bromo-6-(difluoromethyl)-4-nitropyridine-2-methanol
3-Chloro-4-(difluoromethyl)-2-fluoro-5-iodopyridine
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