2-(Chloromethyl)-5-cyano-4-(difluoromethyl)pyridine-3-acetonitrile
2-(Chloromethyl)-3-cyano-6-(difluoromethyl)pyridine-5-acetonitrile
4-(Aminomethyl)-2-(difluoromethyl)-5-fluoro-3-hydroxypyridine
2-(Aminomethyl)-4-(difluoromethyl)-5-fluoro-3-hydroxypyridine