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