Girish Mahajan (Editor)

Trihydroxyanthraquinone

Updated on
Edit
Like
Comment
Share on FacebookTweet on TwitterShare on LinkedInShare on Reddit

A trihydroxyanthraquinone or trihydroxyanthracenedione is any of several isomeric organic compounds with formula C
14H
8O
5, formally derived from anthraquinone by replacing three hydrogen atoms by hydroxyl groups. They include several historically important dyes. The isomers may differ in the parent anthraquinone isomer and/or of the three hydroxyl groups.

In general there are 56 ways of choosing three out of the 8 hydrogens. However, if the underlying core is symmetrical, some of these choices will give identical molecules.

From 9,10-anthaquinone

Due to the symmetry of the 9,10-anthraquinone core, there are only 14 isomers.

  • 1,2,3-Trihydroxyanthraquinone (anthragallol)
  • 1,2,4-Trihydroxyanthraquinone (purpurin), a component of madder root dye.
  • 1,2,5-Trihydroxyanthraquinone (oxyanthrarufin)
  • 1,2,6-Trihydroxyanthraquinone (flavopurpurin)
  • 1,2,7-Trihydroxyanthraquinone (isopurpurin, anthrapurpurin)
  • 1,2,8-Trihydroxyanthraquinone (oxychrysazin)
  • 1,3,5-Trihydroxyanthraquinone
  • 1,3,6-Trihydroxyanthraquinone
  • 1,3,7-Trihydroxyanthraquinone
  • 1,3,8-Trihydroxyanthraquinone
  • 1,4,5-Trihydroxyanthraquinone
  • 1,4,6-Trihydroxyanthraquinone
  • 1,6,7-Trihydroxyanthraquinone
  • 2,3,6-Trihydroxyanthraquinone

    • References

    Trihydroxyanthraquinone Wikipedia
    (Text) CC BY-SA


    Similar Topics