3-Chloro-6-(chloromethyl)-2-cyano-5-(difluoromethyl)pyridine
5-Chloro-2-(chloromethyl)-4-cyano-3-(difluoromethyl)pyridine
5-Chloro-2-(chloromethyl)-3-cyano-4-(difluoromethyl)pyridine
2-Bromo-3-(difluoromethyl)-4-nitropyridine-6-carbonyl chloride
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