2-Chloro-3-cyano-5-(difluoromethyl)pyridine-6-sulfonamide
2-Chloro-3-cyano-4-(difluoromethyl)pyridine-6-sulfonamide
4-Chloro-6-cyano-2-(difluoromethyl)pyridine-3-sulfonyl chloride
5-Chloro-2-(difluoromethyl)-4-fluoropyridine-3-carboxylic acid
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