2-Cyano-4-(fluoromethyl)-5-(trifluoromethoxy)pyridine-3-carboxylic acid
4-Cyano-3-fluoro-2-(trifluoromethoxy)pyridine-6-acetic acid
2-(Chloromethyl)-5-cyano-6-(trifluoromethoxy)pyridine-3-methanol
2-Cyano-3-(fluoromethyl)-6-(trifluoromethoxy)pyridine-5-carboxylic acid