2-Bromo-4-methoxy-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
4-Bromo-3-fluoro-2-nitro-5-(trifluoromethoxy)pyridine
4-Bromo-3-(chloromethyl)-6-(trifluoromethoxy)pyridine-2-carboxaldehyde
2-Bromo-3-methoxy-6-(trifluoromethoxy)pyridine-4-carboxaldehyde