Ethyl 2-chloro-4-(difluoromethyl)-3-fluoropyridine-6-carboxylate
2-Bromo-3-(bromomethyl)-6-(difluoromethyl)pyridine-5-acetonitrile
2-Bromo-3-(bromomethyl)-5-(difluoromethyl)pyridine-6-acetonitrile
2-Bromo-3-(bromomethyl)-4-(difluoromethyl)pyridine-6-acetonitrile