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