3-Bromo-5-(chloromethyl)-2-(difluoromethyl)pyridine-6-acetonitrile
4-Bromo-2-(chloromethyl)-3-(difluoromethyl)-5-nitropyridine
3-Bromo-5-(chloromethyl)-6-(difluoromethyl)-2-nitropyridine
5-Bromo-4-(chloromethyl)-2-(difluoromethyl)pyridine-3-acetonitrile