3-Bromo-5-hydroxy-4-(trifluoromethoxy)pyridine-2-carboxaldehyde
5-Bromo-4-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxaldehyde
3-Bromo-4-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxaldehyde
4-Bromo-3-(chloromethyl)-2-fluoro-5-(trifluoromethoxy)pyridine