4-Cyano-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Fluoro-3-methoxy-6-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
5-Cyano-3-(fluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Fluoro-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-4-acetic acid