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C6H5C2H2C2H2CO2H

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Cinnamic \Cin*nam"ic\, a. [From {Cinnamon}.] (Chem.)
   Pertaining to, or obtained from, cinnamon.

   {Cinnamic acid} (Chem.), a white, crystalline, odorless
      substance. {C6H5.C2H2C2H2.CO2H}, formerly obtained from
      storax and oil of cinnamon, now made from certain benzene
      derivatives in large quantities, and used for the
      artificial production of indigo.
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