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