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