3-Cyano-2-fluoro-6-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Cyano-6-fluoro-5-(trifluoromethoxy)pyridine-3-acetic acid
5-Chloro-2-methoxy-3-(trifluoromethoxy)pyridine-6-acetonitrile
3-Cyano-2-fluoro-4-(trifluoromethoxy)pyridine-6-carboxylic acid