Isoquercetin

Isoquercetin

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 Quercetin 3-O-β-D-glucopyranoside
Identifiers
CAS Number	482-35-9 Y
ChemSpider	4444361
Jmol 3D model	Interactive image
PubChem	5280804
InChI InChI=1S/C21H20O12/c22-6-13-15(27)17(29)18(30)21(32-13)33-20-16(28)14-11(26)4-8(23)5-12(14)31-19(20)7-1-2-9(24)10(25)3-7/h1-5,13,15,17-18,21-27,29-30H,6H2/t13-,15-,17+,18-,21+/m1/s1 Key: OVSQVDMCBVZWGM-QSOFNFLRSA-N InChI=1/C21H20O12/c22-6-13-15(27)17(29)18(30)21(32-13)33-20-16(28)14-11(26)4-8(23)5-12(14)31-19(20)7-1-2-9(24)10(25)3-7/h1-5,13,15,17-18,21-27,29-30H,6H2/t13-,15-,17+,18-,21+/m1/s1 Key: OVSQVDMCBVZWGM-QSOFNFLRBX
SMILES C1=CC(=C(C=C1C2=C(C(=O)C3=C(C=C(C=C3O2)O)O)O[C@H]4[C@@H]([C@H]([C@@H]([C@H](O4)CO)O)O)O)O)O
Properties
Chemical formula	C21H20O12
Molar mass	464.38 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Isoquercetin 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 Himalayas. Quercetin glycosides are also present in tea.

It is the 3-O-glucoside of quercetin.

Spectral data

The lambda-max for isoquercetin is 254.8 and 352.6 nm.