4-Bromo-5-chloro-3-(difluoromethyl)pyridine-2-carbonyl chloride
4-Bromo-3-cyano-2-(difluoromethyl)pyridine-6-sulfonamide
4-Bromo-6-cyano-3-(difluoromethyl)pyridine-2-sulfonamide
3-Bromo-4-cyano-2-(difluoromethyl)pyridine-6-sulfonamide
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