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