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