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2-Chloro-5-nitro-benzenesulfonyl chloride CAS4533-95-3Used as medicine and dye intermediates.
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Pentafluorobenzenesulfonyl Chloride CAS832-53-1Aryl Fluorinated Building Blocks, Building Blocks, C6, Chemical Synthesis, Fluorinated Building Blocks
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2-Fluorophenol CAS367-12-4an important intermediate of medicine and agricultural chemicals