Methyl 2-bromo-3-(difluoromethyl)-5-fluoropyridine-6-carboxylate
2-Bromo-5-cyano-4-(difluoromethyl)pyridine-3-carbonyl chloride
2-Bromo-5-cyano-3-(difluoromethyl)pyridine-4-carbonyl chloride
2-Bromo-4-cyano-6-(difluoromethyl)pyridine-3-carbonyl chloride