4-(Bromomethyl)-2-hydroxy-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
3-Hydroxy-5-nitro-2-(trifluoromethoxy)pyridine-6-carboxaldehyde
2-(Bromomethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-6-methanol
3-Hydroxy-4-nitro-6-(trifluoromethoxy)pyridine-2-carboxaldehyde