2-Bromo-3-cyano-4-(difluoromethyl)pyridine-6-acetonitrile
5-Bromo-4-cyano-3-(difluoromethyl)-2-(trifluoromethyl)pyridine
3-Bromo-6-cyano-2-(difluoromethyl)-5-(trifluoromethyl)pyridine
3-Bromo-2-cyano-5-(difluoromethyl)-6-(trifluoromethyl)pyridine
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