Home > Name List By other > (2R,3R)-3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-2, 3-dihydrochromen-4-one

CAS No 27200-12-0 , (2R,3R)-3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-2,
3-dihydrochromen-4-one

  • Name: (2R,3R)-3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-2,
    3-dihydrochromen-4-one
  • Synonyms: (2R,3R)-3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-2,
    3-dihydrochromen-4-one;Ampelopsin; Ampeloptin; 27200-12-0; (+)-Dihydromyricetin; (+)-Ampelopsin; Ampelopsin (flavanol); rac-ampelopsin;
  • CAS Registry Number:
  • Flash Point: 296.7 ºC
  • Boiling Point: 780.7 ºC
  • Density: 1.808 g/cm3
  • Refractive index: 1.798
  • Safety Statements: Moderately toxic by intraperitoneal route. Low toxicity by ingestion. When heated to decomposition it emits acrid smoke and irritating vapors.
  • Flash Point: 296.7 ºC
  • Molecular Weight: 320.25098
  • InchiKey: KJXSIXMJHKAJOD-LSDHHAIUSA-N
  • InChI: InChI=1S/C15H12O8/c16-6-3-7(17)11-10(4-6)23-15(14(22)13(11)21)5-1-8(18)
    12(20)9(19)2-5/h1-4,14-20,22H/t14-,15+/m0/s1
  • Molecular Formula: C15H12O8
  • Molecular Structure:CAS No:27200-12-0 (2R,3R)-3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-2,<br />3-dihydrochromen-4-one

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References of (2R,3R)-3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-2,
3-dihydrochromen-4-one
Title: Ampelopsin
CAS Registry Number: 27200-12-0
CAS Name: (2R-trans)-2,3-Dihydro-3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-4H-1-benzopyran-4-one
Synonyms: 3,3￠,4￠,5,5￠,7-hexahydroxyflavanone; ampeloptin; dihydromyricetin
Molecular Formula: C15H12O8
Molecular Weight: 320.25
Percent Composition: C 56.26%, H 3.78%, O 39.97%
Literature References: From leaves of Ampelopsis meliaefolia Kudo, Vitaceae: Kotake, Kubota, Ann. 544, 253 (1940); from bark of Pinus contoria Dougl., Pinaceae: Hergert, J. Org. Chem. 21, 534 (1956); US 2870165 (1959 to Rayonier); from Erythrophleum africanum (Welw.) Harms, Caesalpiniaceae: Hansel, Klaffenbach, Arch. Pharm. 294, 158 (1961). Synthesis from myricetin, q.v.: Kotake, Kubota, J. Inst. Polytech. Osaka City Univ. 1, no. 2, 47 (1950), C.A. 46, 2052e (1952).
 
Derivative Type: Hemipentahydrate
Properties: Needles from water, mp 245-246°.
Melting point: mp 245-246°
 
Derivative Type: Hexaacetate
Molecular Formula: C27H24O14
Molecular Weight: 572.47
Percent Composition: C 56.65%, H 4.23%, O 39.13%
Properties: Needles from alc, mp 174-175°.
Melting point: mp 174-175°
 
Derivative Type: Hexabenzoate
Molecular Formula: C57H42O14
Molecular Weight: 950.93
Percent Composition: C 71.99%, H 4.45%, O 23.56%
Properties: Needles from alc, mp 174°.
Melting point: mp 174°