5-Cyano-2-methyl-4-(trifluoromethoxy)pyridine-3-acetonitrile
5-(Chloromethyl)-3-cyano-2-(trifluoromethoxy)pyridine-4-acetic acid
4-Cyano-5-methyl-2-(trifluoromethoxy)pyridine-3-acetonitrile
3-(Chloromethyl)-5-cyano-4-(trifluoromethoxy)pyridine-2-acetic acid