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