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4,5-Dihydroxyanthraquinone-2-carboxylic acid, Rhubarb yellow, Cassic acid, Chrysazin 3-carboxylic acid, 9,10-Dihydro-4,5-dihydroxy-9,10-dioxo-2-anthracenecarboxylic acid, Monorhein, Rheic acid
Empirical Formula (Hill Notation):
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≥300 °C (lit.)

storage temp.


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10, 50 mg in glass insert

Biochem/physiol Actions

Constituent that is enriched in rhubarb with anti-inflammatory, anti-osteoarthritic, and anti-cancer activity. It reduces IL-1β production and secretion, caspase-3 activity, inducible nitric oxide synthase activity, and phosphorylation of c-Jun and c-Jun NH2-terminal kinase (JNK).

Storage Class Code

13 - Non Combustible Solids



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dust mask type N95 (US), Eyeshields, Gloves

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M Yaron et al.
Osteoarthritis and cartilage, 7(3), 272-280 (1999-05-18)
The etiology of osteoarthritis (OA) is still a matter of debate. Several factors are known to be involved in the destruction of the articular cartilage. Interleukin-1 (IL-1) plays an important role in the pathogenesis of osteoarthritis (OA) either directly or
Alexandrina Ferreira Mendes et al.
Pharmacology & toxicology, 91(1), 22-28 (2002-08-24)
Diacerhein and rhein are anthraquinone compounds that ameliorate the course of osteoarthritis. Recent reports also suggest that these compounds may have antiinflammatory properties, but the cellular mechanisms by which they exert antiosteoarthritic and possibly antiinflammatory effects are still incompletely understood.
J P Pelletier et al.
Clinical and experimental rheumatology, 21(2), 171-177 (2003-05-16)
The primary objective of this study was to evaluate the ex vivo therapeutic efficacy of diacerein and its active metabolite, rhein, on osteoarthritic (OA) cartilage chondrocyte DNA fragmentation and death in the experimental canine model of OA. The study also
Baoen Chen et al.
Journal of the American Chemical Society, 134(43), 17963-17971 (2012-10-11)
The direct nucleic acid repair dioxygenase FTO is an enzyme that demethylates N(6)-methyladenosine (m(6)A) residues in mRNA in vitro and inside cells. FTO is the first RNA demethylase discovered that also serves a major regulatory function in mammals. Together with
Yuhui Liu et al.
International journal of biological sciences, 17(2), 589-602 (2021-02-23)
Several natural products have been demonstrated to both enhance the anti-tumor efficacy and alleviate the side effects of conventional chemotherapy drugs. Rhein, a main constituent of the Chinese herb rhubarb, has been shown to induce apoptosis in various cancer types.

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