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