3-(Bromomethyl)-4-iodo-2-(trifluoromethoxy)pyridine-6-carboxaldehyde
3-(Chloromethyl)-4-(difluoromethyl)-2-iodo-5-(trifluoromethoxy)pyridine
3-(Bromomethyl)-2-iodo-6-(trifluoromethoxy)pyridine-4-carboxaldehyde
3-(Bromomethyl)-2-iodo-4-(trifluoromethoxy)pyridine-6-carboxaldehyde