4-(Bromomethyl)-2-fluoro-3-(trifluoromethoxy)pyridine-5-carboxaldehyde
5-(Bromomethyl)-3-fluoro-4-(trifluoromethoxy)pyridine-2-carboxaldehyde
3-(Bromomethyl)-5-fluoro-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
2-(Bromomethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxylic acid