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CAS No 155-58-8 , Rhapontin Search by region : China

  • Name: Rhapontin
  • Synonyms: 3-Hydroxy-5-[2-(3-hydroxy-4-methoxyphenyl)vinyl]phenyl-beta-D-glucopyranoside;Rhapontin;
  • CAS Registry Number:
  • Melting Point: 236-240 °C
  • Density: 1.498 g/cm3
  • Refractive index: 1.711
  • Safety Statements: 24/25
  • Hazard Symbols: Xi
  • EINECS: 205-845-0
  • Molecular Weight: 420.41
  • InChI: InChI=1/C21H24O9/c1-28-16-5-4-11(8-15(16)24)2-3-12-6-13(23)9-14(7-12)29-21-20(27)19(26)18(25)17(10-22)30-21/h2-9,17-27H,10H2,1H3/b3-2+/t17-,18-,19+,20-,21-/m1/s1
  • Risk Statements: 36/38
  • Molecular Formula: C21H24O9
  • Molecular Structure:CAS No:155-58-8 Rhapontin

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References of Rhapontin
Title: Rhapontin
CAS Registry Number: 155-58-8
CAS Name: (E)-3-Hydroxy-5-[2-(3-hydroxy-4-methoxyphenyl)ethenyl]phenyl b-D-glucopyranoside
Synonyms: 4￠-methoxy-3,3￠,5-stilbenetriol 3-glucoside; rhaponticin; ponticin
Molecular Formula: C21H24O9
Molecular Weight: 420.41
Percent Composition: C 59.99%, H 5.75%, O 34.25%
Literature References: From root of Rheum rhaponticum L., Polygonaceae: Hesse, J. Prakt. Chem. 77, 321 (1908); Schürhoff, Plettner, Arch. Pharm. 275, 281 (1937). On hydrolysis yields rhapontigenin and glucose: Kawamura, J. Pharm. Soc. Jpn. 58, 405 (1938), C.A. 32, 66554 (1938). Constitution of rhapontigenin: Takaoka, Proc. Imp. Acad. Tokyo 16, 408 (1940), C.A. 35, 13992 (1941).
Properties: Crystals, dec 236-237°. [a]D32 -59.5° (acetone). Exhibits bright blue fluorescence. Sol in dil alcohol, hot acetone, hot water; slightly sol in ether, alc, acetone, cold water; practically insol in benzene, petr ether, chloroform.
Optical Rotation: [a]D32 -59.5° (acetone)