Ethyl 5-cyano-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-6-carboxylate
2-Cyano-6-(fluoromethyl)-3-(trifluoromethoxy)pyridine-5-acetic acid
5-Cyano-2-hydroxy-3-iodo-6-(trifluoromethoxy)pyridine
4-Cyano-3-hydroxy-6-iodo-2-(trifluoromethoxy)pyridine