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