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CAS No 478-43-3 , 4,5-dihydroxy-9,10-dioxoanthracene-2-carboxylic acid

  • Name: 4,5-dihydroxy-9,10-dioxoanthracene-2-carboxylic acid
  • Synonyms: Cassic acid; 478-43-3;Rhubarb Yellow; Rheic acid; Chrysazin-3-carboxylic acid; 4,5-Dihydroxyanthraquinone-2-carboxylic acid;4,5-dihydroxy-9,10-dioxoanthracene-2-carboxylic acid; Monorhein;
  • CAS Registry Number:
  • Transport: OTH
  • Melting Point: 321-322 ºC
  • Flash Point: STABILITY
  • Boiling Point: RELATIVE DENSITY
  • Density: 1.687g/cm3
  • Water Solubility: <0.1 G/100 ML AT 17 ºC
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • Flash Point: STABILITY
  • EINECS: 207-521-4
  • Molecular Weight: 284.22042
  • InchiKey: FCDLCPWAQCPTKC-UHFFFAOYSA-N
  • 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)
  • Risk Statements: S26;S37/39
  • Molecular Formula: C15H8O6
  • Molecular Structure:CAS No:478-43-3 4,5-dihydroxy-9,10-dioxoanthracene-2-carboxylic acid
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478-43-3 RHEIN

  • Germany ABCR GmbH & Co KG [Manufacturer]
  • Tel: +49 721 95061-0
  • Fax: +49 721 95061-80
  • Address: Im Schlehert 10
    76187 Karlsruhe
    Germany null,nullGermany
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478-43-3 Rhein

  • Rhein Synonym: 1,8-Dihydroxy-3-Carboxy anthraquinone; 4,5-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid; 4,5-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylate CAS: 478-43-3 EINECS: 207-521-4 Assay: NLT98% M.F: C15H8O6 M.W: 284...
  • Min. Order: 500
  • China Wuhan Yuancheng Group [Manufacturer, Trading Company]
  • Tel: 86-027-50756153
  • Address: Zhongshan Road Wuhan,HubeiChina
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478-43-3 Rhein Cas No.: 478-43-3 HPLC≥ 98%

  • Rhein Othername:1,8-Dihydroxy-3-Carboxy anthraquinone; 4,5-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid; 4,5-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylate Plant original:Rheum palmatum L Chemical Properties Chemical Formu...
  • Min. Order: 1
  • FOB Price: USD1 - null /
  • China Shaanxi Huayu Bio-Tech Co.,Ltd [Manufacturer, Trading Company]
  • Tel: 86-917-3676029
  • Fax: --
  • Address: No.2 Chencang Road,Baoji Shaanxi China baoji,ShaanxiChina

478-43-3 RHEIN 90%, 95%

  • Germany CHEMOS GmbH [Manufacturer]
  • Tel: 0049 9402/9336 0
  • Fax: 0049 9402/9336 13
  • Address: CHEMOS GmbH
    Werner-von-Siemensstr. 3
    93128 Regenstauf
    Germany null,nullGermany
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478-43-3 Rhein

  • United States HBCChem, Inc. [Manufacturers]
  • Tel: +1-510-219-6317
  • Fax: +1-510-675-0318
  • Address: null Union City,CaliforniaUnited States
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478-43-3 Rhein

  • China Xilin Chemical Group Co., Ltd null
  • Tel: +86-(0)-15527136576
  • Fax: +86-(27)-83820093
  • Address: 16# Luojiashan, Wuchang District, Wuhan, Hubei 430071, null,nullChina
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478-43-3 Rhein

  • Rhein B8352 478-43-3
  • China bepharm ltd. null
  • Tel: 86-21-51816456
  • Address: 128 Xiangyin Road, Room C320-321 Yangpu District, Shanghai 200433, China null,nullChina
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478-43-3 Rhein

  • China Xingcheng Chempharm Co., Ltd [Manufacturer]
  • Tel: +86-576-88525005/ +86-576-88886292
  • Fax: +86-576-88225056
  • Address: B Area, 10F, Yaoda Mansion, 289, Shifu Road, Taizhou, Zhejiang, China 318000 null,nullChina
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478-43-3 Rhein

  • China Kouting Chemical Co.,Ltd [Importer/Exporter]
  • Tel: +86-(21)-58116473
  • Fax: +86-(21)-61094103
  • Address: Hunan Road, Pudong New District, Shanghai, Shanghai 201318, shanghai,shanghaiChina
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478-43-3 RHEIN

  • Germany Cfm Oskar Tropitzsch [Manufacturer]
  • Tel: +49-9231-9619-0
  • Fax: +49-9231-9619-60
  • Address: Cfm Oskar Tropitzsch
    Waldershofer Str. 49-51
    95615 Marktredwitz
    Germany null,nullGermany
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References of 4,5-dihydroxy-9,10-dioxoanthracene-2-carboxylic acid
Title: Rhein
CAS Registry Number: 478-43-3
CAS Name: 9,10-Dihydro-4,5-dihydroxy-9,10-dioxo-2-anthracenecarboxylic acid
Synonyms: 1,8-dihydroxyanthraquinone-3-carboxylic acid; 4,5-dihydroxyanthraquinone-2-carboxylic acid; chrysazin-3-carboxylic acid; monorhein; rheic acid; cassic acid; parietic acid; rhubarb yellow
Molecular Formula: C15H8O6
Molecular Weight: 284.22
Percent Composition: C 63.39%, H 2.84%, O 33.78%
Literature References: Found in the free state and as glucoside in Rheum spp, Polygonaceae (rhubarb) and in Senna leaves; also in several spp of Cassia (Leguminosae). Diacetate used as antirheumatic. Isoln from Chinese rhubarb: J. Schlossberger, O. Doepping, Ann. 50, 196 (1844); O. Hesse, ibid. 309, 32 (1899); F. Tutin, H. W. B. Clewer, J. Chem. Soc. 99, 946 (1911); from aloe-emodin, q.v.: O. A. Oesterle, Arch. Pharm. 241, 604 (1903); from Cassia alata L.: H. Hauptmann, L. L. Nazario, J. Am. Chem. Soc. 72, 1492 (1950); from C. fistula: V. K. Murty et al., Tetrahedron 23, 515 (1967). Prepn from chrysophanic diacetate: Fischer et al., J. Prakt. Chem. [2] 83, 208; 84, 369 (1911). Structure: H. Nawa et al., J. Org. Chem. 26, 979 (1961). Use in arthritis: C. A. Friedmann, DE 2711493; idem, US 4244968 (1977, 1981 both to Proter). Spectrophotometric study: A. A. Habib, N. A. El-Sebakhy, J. Nat. Prod. 43, 452 (1980). Determn by gas chromatography, mass spectroscopy: G. W. Van Eijk, H. J. Roeijmans, J. Chromatogr. 295, 497 (1984); HPLC: A. J. J. Van den Berg, R. P. Labadie, ibid. 329, 311 (1985). Pharmacological effects on colonic mucosa: R. Wanitschke, Pharmacology 20, Suppl. 1, 21 (1980); K. Ewe, ibid. 27. Metabolism study: J. Lemli, L. Lemmons, ibid. 50. In electron transport: P. Egerer et al., Z. Physiol. Chem. 363, 627 (1982). Inhibition of proteases: L. Raimondi et al., Pharmacol. Res. Commun. 14, 103 (1982). Effect on prostaglandin biosynthesis: S. Franchi-Micheli et al., J. Pharm. Pharmacol. 35, 262 (1983).
Properties: Yellow needles by sublimation, mp 321-322°, dec 330°. Absorption max (methanol): 229, 258, 435 nm (e 36800, 20100, 11100). Practically insol in water. Sol in alkalies, pyridine; slightly sol in alc, benzene, chloroform, ether, petr ether. Forms a red potassium salt and a pink sodium salt. Red precips are also obtained with Ca(OH)2 and Ba(OH)2.
Melting point: mp 321-322°
Absorption maximum: Absorption max (methanol): 229, 258, 435 nm (e 36800, 20100, 11100)
 
Derivative Type: Diacetate see Diacerein