3-(Difluoromethyl)-6-fluoropyridine-2-sulfonamide
5-(Difluoromethyl)-2-fluoropyridine-3-sulfonamide
4-(Difluoromethyl)-3-fluoropyridine-5-sulfonamide
3-Amino-2,6-difluoro-4-(difluoromethyl)pyridine
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