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