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