4-(Bromomethyl)-5-cyano-3-(difluoromethyl)pyridine-2-carboxaldehyde
4-(Bromomethyl)-3-cyano-2-(difluoromethyl)pyridine-5-carboxaldehyde
2-Cyano-4-(difluoromethyl)-6-nitropyridine-3-acetonitrile
4-(Bromomethyl)-6-cyano-3-(difluoromethyl)pyridine-2-carboxaldehyde