3-(Aminomethyl)-5-cyano-2-(difluoromethyl)pyridine-6-acetonitrile
3-(Aminomethyl)-4-cyano-2-(difluoromethyl)pyridine-6-acetonitrile
2-Cyano-5-(difluoromethyl)-3-iodopyridine-4-carboxylic acid
6-Cyano-4-(difluoromethyl)-3-iodopyridine-2-carboxylic acid