3-Cyano-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-acetic acid
4-Cyano-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-6-acetic acid
Ethyl 2-cyano-5-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetate
6-Cyano-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-acetonitrile