5-Bromo-3-(difluoromethyl)-2-iodopyridine-4-sulfonyl chloride
3-Bromo-5-(difluoromethyl)-6-nitropyridine-2-carbonyl chloride
2-Bromo-4-(difluoromethyl)-6-nitropyridine-3-carbonyl chloride
4-Bromo-3-(difluoromethyl)-2-nitropyridine-5-sulfonyl chloride