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