Rhein

CAS Registry Number®

478-43-3

CAS Name

Rhein

Molecular Formula

C15H8O6

Molecular Mass

284.22

Cite this Page

Rhein.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=478-43-3 (retrieved 2025-05-13) (CAS RN: 478-43-3).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    320-322 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C15H8O6/c16-9-3-1-2-7-11(9)14(19)12-8(13(7)18)4-6(15(20)21)5-10(12)17/h1-5,16-17H,(H,20,21)

InChIKey

InChIKey=FCDLCPWAQCPTKC-UHFFFAOYSA-N

SMILES

O=C1C=2C(C(=O)C=3C1=C(O)C=CC3)=CC(C(O)=O)=CC2O

Canonical SMILES

O=C(O)C1=CC(O)=C2C(=O)C=3C(O)=CC=CC3C(=O)C2=C1

Other Names for this Substance

  • 2-Anthracenecarboxylic acid, 9,10-dihydro-4,5-dihydroxy-9,10-dioxo-
  • 2-Anthroic acid, 9,10-dihydro-4,5-dihydroxy-9,10-dioxo-
  • 2-Anthraquinonecarboxylic acid, 4,5-dihydroxy-
  • 9,10-Dihydro-4,5-dihydroxy-9,10-dioxo-2-anthracenecarboxylic acid
  • Cassic acid

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