5-(Bromomethyl)-3-(difluoromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine
3-(Bromomethyl)-5-(difluoromethyl)-2-fluoro-4-(trifluoromethoxy)pyridine
4-Cyano-6-(fluoromethyl)-2-methyl-3-(trifluoromethoxy)pyridine
3-(Chloromethyl)-2-cyano-6-methyl-4-(trifluoromethoxy)pyridine