3-Bromo-4-chloro-2-(difluoromethyl)pyridine-5-sulfonyl chloride
3-Bromo-2-chloro-6-(difluoromethyl)pyridine-4-sulfonyl chloride
3-Bromo-2-chloro-5-(difluoromethyl)pyridine-4-sulfonyl chloride
3-Bromo-2-chloro-4-(difluoromethyl)pyridine-5-sulfonyl chloride