Ethyl 4-bromo-2-cyano-3-(difluoromethyl)pyridine-6-acetate
Ethyl 5-bromo-3-cyano-2-(difluoromethyl)pyridine-4-acetate
4-Bromo-2-(chloromethyl)-6-(difluoromethyl)-3-iodopyridine
Ethyl 5-bromo-3-cyano-4-(difluoromethyl)pyridine-2-acetate
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