5-Chloro-2-cyano-4-(difluoromethyl)pyridine-3-acetonitrile
5-Chloro-2-cyano-3-(difluoromethyl)pyridine-4-acetonitrile
6-Bromo-3-(difluoromethyl)-4-nitropyridine-2-sulfonyl chloride
4-Chloro-3-cyano-6-(difluoromethyl)pyridine-2-acetonitrile
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