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EntityQ116472· pop 13· linked from 30 articles

Also known as hydroxylizaric acid, purpurine, 1,2,4-trihydroxyanthraquinone, 1,2,4-Trihydroxyanthrachinon, 1,2,4-trihydroxy-9,10-anthracenedione, 1,2,4-trihydroxyanthra-9,10-quinone, 1,2,4-trihydroxy-9,10-anthraquinone, Pr

1,2,4-Trihydroxyanthraquinone, commonly called purpurin, is an anthraquinone. It is a naturally occurring red/yellow dye. It is formally derived from 9,10-anthraquinone by replacement of three hydrogen atoms by hydroxyl (OH) groups.

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Encyclopedic overview

6 sections
Contents
  • History
  • Natural occurrence
  • Properties
  • Uses
  • See also
  • References

1,2,4-Trihydroxyanthraquinone, commonly called purpurin, is an anthraquinone. It is a naturally occurring red/yellow dye. It is formally derived from 9,10-anthraquinone by replacement of three hydrogen atoms by hydroxyl (OH) groups.

Purpurin is also called verantin, smoke Brown G, hydroxylizaric acid, and C.I. 58205. It is a minor component of the classical lake pigment "madder lake" or Rose Madder.

Excerpted from Wikipedia’s “purpurin” article, available under the CC BY-SA 4.0 licence.