3-Chloro-4-cyano-6-(trifluoromethoxy)pyridine-2-carboxylic acid
2-Cyano-3-hydroxy-6-(trifluoromethoxy)pyridine-5-carboxylic acid
5-Chloro-4-cyano-3-(trifluoromethoxy)pyridine-2-acetonitrile
3-Chloro-4-cyano-2-(trifluoromethoxy)pyridine-6-carboxylic acid