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