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