4-Hydroxy-2-iodo-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
2-(Bromomethyl)-5-hydroxy-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
5-Hydroxy-3-iodo-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
6-(Bromomethyl)-4-hydroxy-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine