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