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Rhein

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Rhein molecular structure
Molecular structure

The Sigma-Aldrich catalog lists 4 grades and pack sizes of Rhein (CAS 478-43-3). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS478-43-3
Molecular formulaC15H8O6
Molecular weight284.22 g/mol
IUPAC name4,5-dihydroxy-9,10-dioxoanthracene-2-carboxylic acid
SynonymsMonorhein · Rhubarb Yellow · Rheic acid · 4,5-Dihydroxyanthraquinone-2-carboxylic acid · Chrysazin-3-carboxylic acid · 1,8-Dihydroxyanthraquinone-3-carboxylic acid
Safety & Hazards (GHS) Warning
Irritant Irritant
  • H315 Causes skin irritation
  • H319 Causes serious eye irritation
  • H335 May cause respiratory irritation

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand Product / grade Code
Sigma RHEIN R7269-10MG
R7269-50MG
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Sigma RHEIN, TECH. 275611-250MG
275611-50MG
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For information only; specifications and availability are confirmed at quotation. Prices are not listed.