3-Cyano-4-(fluoromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylic acid
2-(Chloromethyl)-6-cyano-4-(trifluoromethoxy)pyridine-3-acetonitrile
6-(Chloromethyl)-4-cyano-2-(trifluoromethoxy)pyridine-3-acetonitrile
3-(Difluoromethyl)-2-fluoro-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine