3-Chloro-2-fluoro-4-(trifluoromethoxy)pyridine-5-carboxaldehyde
5-Chloro-2-cyano-4-fluoro-3-(trifluoromethoxy)pyridine
2-Bromo-3-(chloromethyl)-5-(trifluoromethoxy)pyridine-6-carboxaldehyde
6-Chloro-2-fluoro-4-(trifluoromethoxy)pyridine-3-carboxaldehyde