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