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