4-Bromo-2-(difluoromethyl)pyridine-6-sulfonamide
6-(Chloromethyl)-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-sulfonamide
3-Bromo-2-(difluoromethyl)pyridine-6-sulfonamide
5-(Bromomethyl)-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-sulfonamide