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