Ethyl 6-bromo-4-cyano-3-(difluoromethyl)pyridine-2-carboxylate
4-Bromo-3-cyano-6-(difluoromethyl)-2-iodopyridine
Methyl 4-bromo-2-cyano-3-(difluoromethyl)pyridine-5-carboxylate
3-Bromo-5-chloro-2-(difluoromethyl)pyridine-6-acetonitrile
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