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