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