4-Chloro-2-cyano-5-(difluoromethyl)pyridine-3-sulfonyl chloride
4-Chloro-6-cyano-2-(difluoromethyl)-3-nitropyridine
4-Chloro-2-cyano-3-(difluoromethyl)pyridine-5-sulfonyl chloride
4-Chloro-6-cyano-3-(difluoromethyl)-2-nitropyridine
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