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