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