4-Bromo-6-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxaldehyde
4-Bromo-2-(chloromethyl)-6-methyl-3-(trifluoromethoxy)pyridine
4-Bromo-2-hydroxy-3-(trifluoromethoxy)pyridine-5-carboxaldehyde
3-Bromo-2-methoxy-5-(trifluoromethoxy)pyridine-4-carboxaldehyde