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