2-Bromo-5-(difluoromethyl)-3-nitropyridine-4-carbonyl chloride
6-Bromo-4-(difluoromethyl)-3-nitro-2-(trifluoromethyl)pyridine
2-Bromo-4-(difluoromethyl)-5-nitropyridine-3-carbonyl chloride
2-Bromo-4-(difluoromethyl)-3-nitro-6-(trifluoromethyl)pyridine