Ethyl 3-(chloromethyl)-2-cyano-5-(difluoromethyl)pyridine-6-acetate
2-(Difluoromethyl)-5-fluoro-3-hydroxypyridine-4-acetonitrile
Ethyl 6-(chloromethyl)-3-cyano-4-(difluoromethyl)pyridine-2-acetate
Ethyl 2-(chloromethyl)-5-cyano-3-(difluoromethyl)pyridine-4-acetate