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