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