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