3-Cyano-2-hydroxy-4-(trifluoromethoxy)pyridine-5-carboxaldehyde
6-Cyano-2-hydroxy-4-(trifluoromethoxy)pyridine-3-carboxaldehyde
2-Cyano-6-hydroxy-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
3-(Chloromethyl)-2-fluoro-5-methyl-6-(trifluoromethoxy)pyridine