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CAS No 520-18-3 , 3,5,7-trihydroxy-2-(4-hydroxyphenyl)chromen-4-one

  • Name: 3,5,7-trihydroxy-2-(4-hydroxyphenyl)chromen-4-one
  • Synonyms: Pelargidenolon; Rhamnolutin; Rhamnolutein;3,5,7-trihydroxy-2-(4-hydroxyphenyl)chromen-4-one;Kempferol; Kaempherol; Swartziol; Populnetin; Robigenin; Trifolitin;
  • CAS Registry Number:
  • Density: 1.688 g/cm3
  • Refractive index: 1.767
  • Water Solubility: ethanol: 20 mg/mL in water
  • Safety Statements: R36/37/38,
  • Hazard Symbols: Xi:Irritant;
  • EINECS: 208-287-6
  • Molecular Weight: 286.2363
  • InchiKey: IYRMWMYZSQPJKC-UHFFFAOYSA-N
  • InChI: InChI=1S/C15H10O6/c16-8-3-1-7(2-4-8)15-14(20)13(19)12-10(18)5-9(17)6-11
    (12)21-15/h1-6,16-18,20H
  • Risk Statements: S26,S36,
  • Molecular Formula: C15H10O6
  • Molecular Structure:CAS No:520-18-3 3,5,7-trihydroxy-2-(4-hydroxyphenyl)chromen-4-one
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520-18-3 Kaempferol

  • Kaempferol is a natural flavonol, a type of flavonoid, that has been isolated from plant sources. More information please visit the website: http://www.creative-enzymes.com/product/Kaempferol_2330.html
  • Min. Order: 10
  • United States Creative Enzymes [Manufacturer]
  • Tel: 1-516-6698109
  • Fax: 1-631-9388127
  • Address: 45-1 Ramsey Road, Shirley New York,New YorkUnited States
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520-18-3 Diospyros Kaki Extract

  • Diospyros Kaki Extract Type: Plant Extract Latin name: Diospyros kaki Thunb Origin: China Part: Leaf Form: Powder Color: Brown Active Ingredient: Kaempferol CAS: 520-18-3 MF: C15H10O6 MW: 286.24 EINECS: 208-287-6 Assay: 29% Package: 25kg/drum Applica...
  • Min. Order: 500
  • China Wuhan Yuancheng Group [Manufacturer, Trading Company]
  • Tel: 86-027-50756153
  • Address: Zhongshan Road Wuhan,HubeiChina
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520-18-3 Kaempferol Cas No.: 520-18-3 HPLC≥ 98%

  • Kaempferol Othername:C.I.75640;Kaempferol;3,5,7,4-Tetrahydroxyflavone; 3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-chromen-4-one;2-(2,4-dihydroxyphenyl)-5,7-dihydroxy-4H-chromen-4-one Plant original:Kaempferia galanga L.;Diphylleia sinensis;Thesium chine...
  • Min. Order: 1
  • 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

520-18-3 KAEMPFEROL

  • Germany ABCR GmbH & Co KG [Manufacturer]
  • Tel: +49 721 95061-0
  • Fax: +49 721 95061-80
  • Address: Im Schlehert 10
    76187 Karlsruhe
    Germany ,Germany
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520-18-3 Kaempferol

  • Kaempferol CAS NO.: 520-18-3 Assay: 90%,98% Molecular Formula:C15H10O6 Molecular Weight:286.24 Packing:1kg/foil bag Appearance: belongs to flavonoids, yellow needle crystal, Usage: Mainly used in anticancer, inhibition of growth, epilepsy, anti-infla...
  • Min. Order: 500
  • FOB Price: USDfalse - false /
  • China Hubei Yuancheng Chemical Co.,Ltd [Manufacturer]
  • Tel: 86-27-68886667
  • Fax: 86-27-88048077
  • Address: NO866, Ziyang Road Wuhan,HubeiChina
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520-18-3 Kaempferol

  • Kaempferol (/'ki?mpf?r?l/) is a natural flavonol, a type of flavonoid, that has been isolated from tea, broccoli, Delphinium, Witch-hazel, grapefruit, cabbage, kale, beans, endive, leek, tomato, strawberries, grapes, brussels sprouts, apples and othe...
  • India New Age Life Sciences [Manufacturer]
  • Tel: 91-91-27170071
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  • Address: New Age Life Sciences, Plot No.20, Road No.4, Beside Bharath Electronics Limited, IDA, Mallapur,HYDERABAD-500076. Hyderabad,Andhra pradeshIndia
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520-18-3 kaempferol

  • China ORCHID CHEMICAL SUPPLIES LTD (OCS) [Importer/Exporter]
  • Tel: +86-571-85395792
  • Fax: +86-571-85420103
  • Address: 607, North Zhongshan Road, Hangzhou 310000 China ,ZhejiangChina
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520-18-3 Kaempferol

  • China Ningbo Inno Pharmchem Co., Ltd. [Manufacturers]
  • Tel: +86-(574)-87319282
  • Fax: +86-(574)-56877908
  • Address: 5F, Building 4, 1035 Guangxian Rd., Ningbo Hi-Tech Park, Ningbo, Zhejiang 315040, Ningbo,ZhejiangChina
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520-18-3 Kaempferol

  • 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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520-18-3 kaempferol

  • China BioBioPha Co., Ltd. [Manufacturer]
  • Tel: +86-871-5217109
  • Fax: +86-871-5217109
  • Address: 132 Lanhei Road, Kunming Institute of Botany, Chinese Academy of Sciences ,China
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References of 3,5,7-trihydroxy-2-(4-hydroxyphenyl)chromen-4-one
Title: Kaempferol
CAS Registry Number: 520-18-3
CAS Name: 3,5,7-Trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one
Synonyms: 3,4¢,5,7-tetrahydroxyflavone; nimbecetin; pelargidenolon 1497; populnetin; rhamnolutein; robigenin; swartziol; trifolitin
Molecular Formula: C15H10O6
Molecular Weight: 286.24
Percent Composition: C 62.94%, H 3.52%, O 33.54%
Literature References: Plant flavonoid isolated from Delphinium consolida L., Ranunculaceae: A. G. Perkin, E. J. Wilkinson, J. Chem. Soc. 81, 585 (1902); from grapefruit (Citrus paradisi Macf., Rutaceae): Dunlap, Wender, Anal. Biochem. 4, 110 (1962); from stems and seeds of Cuscuta reflexa Roxb., Convolvulaceae: K. W. Gopinath et al., J. Sci. Ind. Res. 21B, 601 (1962), C.A. 58, 7134e (1963). Identity with swartziol: M. R.-R. Paris, L. Bézanger-Beauquesne, Compt. Rend. 242, 1761 (1956). Structure: S. von Kostanecki, A. Rozycki, Ber. 34, 3721 (1901). Total synthesis: Y.-H. Lu et al., Yao Hsueh Hsueh Pao 15, 477 (1980), C.A. 94, 174808a (1981). Convenient synthesis: M. Ichikawa et al., Org. Prep. Proced. Int. 14, 183 (1982). Mutagenicity studies: J. T. MacGregor, L. Jurd, Mutat. Res. 54, 297 (1978); A. A. Hardigree, J. L. Epler, ibid. 58, 231 (1978). HPLC determination in soybean: J. D. Gaynor et al., Chromatographia 25, 1049 (1988).
Properties: Yellow needles, mp 276-278°; also reported as light yellow powder from ethanol-water, mp 278-280° (dec) (Ichikawa). uv max: 265, 365 nm. Slightly sol in water; sol in hot alcohol, ether or alkalies.
Melting point: mp 276-278°; mp 278-280° (dec) (Ichikawa)
Absorption maximum: uv max: 265, 365 nm
 
Derivative Type: 3,7-Dirhamnoside
Synonyms: Kaemferitrin; lespedin
Molecular Formula: C27H30O14
Molecular Weight: 578.52
Percent Composition: C 56.05%, H 5.23%, O 38.72%
Literature References: Isoln from the leaves of Indigo arrecta Benth., Leguminosae: Perkin, J. Chem. Soc. 91, 435 (1907); from leaves of Trichosanthus cucumeroides Maxim., Cucurbitaceae: Nakaoki, Morita, J. Pharm. Soc. Jpn. 77, 108 (1957). Identity with lespedin: Hatlori, Nature 168, 788 (1952).
Properties: Crystals from dil alc, mp 201-203°. Slightly sol in boiling water and cold alcohol.
Melting point: mp 201-203°
 
Derivative Type: 3-Glucoside
Synonyms: Astragalin
Molecular Formula: C21H20O11
Molecular Weight: 448.38
Percent Composition: C 56.25%, H 4.50%, O 39.25%
Literature References: From Podophyllum peltatum L. and P. emodi Wall., Berberidaceae. Isoln and structure: von Wartburg, Kuhn, Experientia 21, 67 (1965).
Properties: Crystals from methanol, mp 175-178°. [a]D20 -16.9° (c = 0.45 in methanol).
Melting point: mp 175-178°
Optical Rotation: [a]D20 -16.9° (c = 0.45 in methanol)