Methyl 4-cyano-2-(difluoromethyl)-3-methylpyridine-5-acetate
4-(Aminomethyl)-2-cyano-3-(difluoromethyl)pyridine-5-acetonitrile
Methyl 5-cyano-3-(difluoromethyl)-4-methylpyridine-2-acetate
6-(Aminomethyl)-2-cyano-4-(difluoromethyl)pyridine-3-acetonitrile