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