2-Bromo-6-cyano-4-(difluoromethyl)-3-methoxypyridine
5-Bromo-3-chloro-4-(difluoromethyl)-2-fluoropyridine
4-Bromo-6-cyano-2-(difluoromethyl)-3-iodopyridine
5-Bromo-4-chloro-3-(difluoromethyl)-2-fluoropyridine
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