2-(Bromomethyl)-3-hydroxy-6-nitro-5-(trifluoromethoxy)pyridine
2-(Bromomethyl)-3-hydroxy-5-nitro-4-(trifluoromethoxy)pyridine
4-Fluoro-3-methyl-6-(trifluoromethoxy)pyridine-2-carboxaldehyde
3-(Bromomethyl)-6-fluoro-2-(trifluoromethoxy)pyridine-4-carboxaldehyde