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