3-(Bromomethyl)-2-(difluoromethyl)pyridine-5-sulfonamide
5-Cyano-4-(difluoromethyl)pyridine-2-sulfonyl chloride
3-Cyano-6-(difluoromethyl)pyridine-2-methanol
6-Cyano-2-(difluoromethyl)pyridine-3-sulfonyl chloride
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