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