Ethyl 5-(aminomethyl)-3-cyano-2-(difluoromethyl)pyridine-4-acetate
3-(Bromomethyl)-5-cyano-4-(difluoromethyl)pyridine-2-acetonitrile
Methyl 6-cyano-4-(difluoromethyl)-2-methoxypyridine-3-acetate
Methyl 2-cyano-4-(difluoromethyl)-5-methoxypyridine-3-acetate