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