Ethyl 3-cyano-5-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxylate
6-(Bromomethyl)-3-cyano-4-fluoro-2-(trifluoromethoxy)pyridine
Ethyl 5-cyano-4-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
4-Fluoro-3-hydroxy-2-(trifluoromethoxy)pyridine-6-acetic acid