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