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