3-Bromo-6-cyano-2-(difluoromethyl)pyridine-4-sulfonamide
5-Bromo-2-(chloromethyl)-3-(difluoromethyl)-4-fluoropyridine
3-Bromo-6-cyano-4-(difluoromethyl)pyridine-2-sulfonamide
4-Bromo-3-(chloromethyl)-6-(difluoromethyl)-2-fluoropyridine
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