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