Ethyl 5-cyano-2-hydroxy-4-(trifluoromethoxy)pyridine-3-carboxylate
5-Cyano-2-hydroxy-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
Ethyl 4-cyano-2-hydroxy-5-(trifluoromethoxy)pyridine-3-carboxylate
6-Cyano-4-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxaldehyde