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