3-Bromo-2-cyano-6-(difluoromethyl)-5-methylpyridine
3-Bromo-2-chloro-5-(difluoromethyl)pyridine-4-acetonitrile
2-Bromo-6-chloro-4-(difluoromethyl)pyridine-3-acetonitrile
3-Bromo-2-cyano-5-(difluoromethyl)-4-methylpyridine
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