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