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