Home > Name List By d > D-Ribose,2-C-[[(3,4,5-trihydroxybenzoyl)oxy]methyl]-, 5-(3,4,5-trihydroxybenzoate) China

CAS No 469-32-9 , D-Ribose,2-C-[[(3,4,5-trihydroxybenzoyl)oxy]methyl]-, 5-(3,4,5-trihydroxybenzoate) Search by region : China

  • Name: D-Ribose,2-C-[[(3,4,5-trihydroxybenzoyl)oxy]methyl]-, 5-(3,4,5-trihydroxybenzoate)
  • Synonyms: D-Ribose,2-C-[[(3,4,5-trihydroxybenzoyl)oxy]methyl]-, 5-(3,4,5-trihydroxybenzoate); Ribose, 2-C-(hydroxymethyl)-, 21,5-digallate, D- (8CI); Gallic acid,21,5-diester with 2-C-(hydroxymethyl)-D-ribose (8CI);2',5-Di-O-galloyl-D-hamamelose;Hamamelitannin(6CI,7CI);
  • CAS Registry Number:
  • Melting Point: 145-147°C
  • Flash Point: 331°C
  • Boiling Point: 947.5°Cat760mmHg
  • Density: 1.93g/cm3
  • Refractive index: 1.745
  • Safety Statements:
    WGK Germany 3
    F 3-10-21
  • Flash Point: 331°C
  • EINECS: 207-416-3
  • Molecular Weight: 484.36
  • InChI: InChI=1/C20H20O14/c21-5-12-15(28)16(33-18(29)6-1-8(22)13(26)9(23)2-6)17(20(31)32-12)34-19(30)7-3-10(24)14(27)11(25)4-7/h1-4,12,15-17,20-28,31H,5H2/t12-,15-,16-,17-,20-/m1/s1
  • Molecular Formula: C20H20 O14
  • Molecular Structure:CAS No:469-32-9 D-Ribose,2-C-[[(3,4,5-trihydroxybenzoyl)oxy]methyl]-, 5-(3,4,5-trihydroxybenzoate)

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469-32-9 HAMAMELITANNIN

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References of D-Ribose,2-C-[[(3,4,5-trihydroxybenzoyl)oxy]methyl]-, 5-(3,4,5-trihydroxybenzoate)
Title: Hamamelitannin
CAS Registry Number: 469-32-9
CAS Name: 2-C-[[(3,4,5-Trihydroxybenzoyl)oxy]methyl]-D-ribofuranose 5-(3,4,5-trihydroxybenzoate)
Synonyms: 2-C-(hydroxymethyl)-D-ribofuranose 2￠,5-digallate
Molecular Formula: C20H20O14
Molecular Weight: 484.36
Percent Composition: C 49.59%, H 4.16%, O 46.24%
Literature References: From bark of Hamamelis virginiana L., Hamamelidaceae: Grüttner, Arch. Pharm. 236, 278 (1898); from bark of Castanea dentata (Marsh.) Borkh., Fagaceae: Mayer, Kunz, Naturwissenschaften 46, 206 (1959). Structure: Mayer et al., Ann. 688, 232 (1965). Synthesis: Ezekiel et al., Carbohydr. Res. 11, 233 (1969).
Properties: Prisms from water, mp 145-147°. [a]D19 +32.6° (c = 1.5).
Melting point: mp 145-147°
Optical Rotation: [a]D19 +32.6° (c = 1.5)
 
Derivative Type: Hexamethyl ether
Molecular Formula: C26H32O14
Molecular Weight: 568.52
Percent Composition: C 54.93%, H 5.67%, O 39.40%
Properties: Needles from dioxane + water, mp 73-76°. [a]25578 +10.0° (c = 2.0 in dioxane). Sol in acetone, dioxane, methanol. Practically insol in water.
Melting point: mp 73-76°
Optical Rotation: [a]25578 +10.0° (c = 2.0 in dioxane)