6-(Bromomethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-sulfonamide
2-(Bromomethyl)-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-5-sulfonamide
3-Cyano-2-(difluoromethyl)pyridine-4-sulfonamide
2-Cyano-5-(difluoromethyl)pyridine-3-sulfonamide