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