3-Chloro-2-(difluoromethyl)pyridine-5-sulfonamide
2-Chloro-6-(difluoromethyl)pyridine-4-sulfonamide
4-Bromo-2-(difluoromethyl)pyridine-5-sulfonamide
4-Amino-3-(difluoromethyl)pyridine-5-sulfonamide
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