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