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