Ethyl 6-cyano-4-(difluoromethyl)-2-methoxypyridine-3-carboxylate
Ethyl 4-(aminomethyl)-3-cyano-2-(difluoromethyl)pyridine-5-acetate
3-Cyano-2-(difluoromethyl)-5-nitropyridine-4-acetonitrile
Ethyl 4-(aminomethyl)-6-cyano-3-(difluoromethyl)pyridine-2-acetate