3-(Bromomethyl)-2-fluoro-5-(trifluoromethoxy)pyridine-6-carboxaldehyde
5-(Bromomethyl)-2-(difluoromethyl)-3-fluoro-6-(trifluoromethoxy)pyridine
3-(Bromomethyl)-2-fluoro-4-(trifluoromethoxy)pyridine-5-carboxaldehyde
6-(Bromomethyl)-2-fluoro-4-(trifluoromethoxy)pyridine-3-carboxaldehyde