3-(Chloromethyl)-4-cyano-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine
2-(Bromomethyl)-4-cyano-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine
6-(Chloromethyl)-3-cyano-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine
2-(Bromomethyl)-3-cyano-4-(difluoromethyl)-6-(trifluoromethoxy)pyridine