4-Cyano-6-(difluoromethyl)-3-methylpyridine-2-carboxaldehyde
3-(Aminomethyl)-4-cyano-5-(difluoromethyl)pyridine-2-carboxylic acid
6-Cyano-2-(difluoromethyl)-4-methylpyridine-3-carboxaldehyde
2-(Aminomethyl)-3-cyano-6-(difluoromethyl)pyridine-5-carboxylic acid