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It is the 3-O-] of ]. It is the 3-O-] of ].


==Spectral datas== == Spectral data ==
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==References== == References ==
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Revision as of 12:44, 3 December 2011

Isoquercitin
Isoquercitin structure
Isoquercitin structure
Names
IUPAC name 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-[(2S,3R,4S,5S,6R)-3,4, 5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-4-one
Other names Isoquercitrin
Isoquercitroside
isoquercitin
trifoliin
Isotrifolin
trifoliin A
Isohyperoside
Isotrifoliin
Quercetin-3-glucoside
Quercetin-3-O-glucoside
Identifiers
CAS Number
3D model (JSmol)
ECHA InfoCard 100.123.856 Edit this at Wikidata
PubChem CID
CompTox Dashboard (EPA)
SMILES
  • C1=CC(=C(C=C1C2=C(C(=O)C3=C(C=C(C=C3O2)O)O)OC4C(C(C(C(O4)CO)O)O)O)O)O
Properties
Chemical formula C21H20O12
Molar mass 464.37 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound

Isoquercitin is a chemical compound. It can be isolated from mangoes and from Rheum nobile, the Noble rhubarb or Sikkim rhubarb, a giant herbaceous plant native to the Himalaya. Quercetin glycosides are also present in tea.

It is the 3-O-glucoside of quercetin.

Spectral data

UV-Vis
Lambda-max 254.8 ; 352.6 nm
Extinction coefficient ?
IR
Major absorption bands ? cm
NMR
Proton NMR
Carbon-13 NMR
Other NMR data
MS
Masses of
main fragments

References

  1. Simultaneous Determination of All Polyphenols in Vegetables, Fruits, and Teas. Hiroyuki Sakakibara, Yoshinori Honda, Satoshi Nakagawa, Hitoshi Ashida, and Kazuki Kanazawa, J. Agric. Food Chem., 2003, 51 (3), pp 571–581, DOI: 10.1021/jf020926l
Flavonols and their conjugates
Backbone
Aglycones
Flavonols
Aglycones
Conjugates
Glycosides of herbacetin
Glycosides of kaempferol
Glycosides of myricetin
Conjugates of quercetin
Sulfates
Glycosides
O-Methylated flavonols
Aglycones
Glycosides
of isorhamnetin
other
Derivative flavonols
Aglycones
Glycosides
Pyranoflavonols
Aglycones
Furanoflavonols
Aglycones
Glycosides
Semisynthetic
Glycosides

Template:Natural-phenol-stub

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