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