Ethyl 3-cyano-4-hydroxy-6-(trifluoromethoxy)pyridine-2-acetate
Ethyl 3-cyano-4-hydroxy-2-(trifluoromethoxy)pyridine-6-acetate
5-Cyano-4-(difluoromethyl)-3-methyl-2-(trifluoromethoxy)pyridine
3-Cyano-4-hydroxy-2-(trifluoromethoxy)pyridine-6-carboxylic acid