5-Fluoro-2-iodo-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
4-Chloro-3-(fluoromethyl)-5-(trifluoromethoxy)pyridine-2-carboxaldehyde
4-Chloro-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxaldehyde
4-Fluoro-6-iodo-3-(trifluoromethoxy)pyridine-2-carboxaldehyde