CAS number 482-35-9 YesY
PubChem 5280804
Jmol-3D images Image 1
Molecular formula C21H20O12
Molar mass 464.38 g mol−1
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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.[1]

It is the 3-O-glucoside of quercetin.

Spectral data

Lambda-max 254.8 ; 352.6 nm
Extinction coefficient  ?
Major absorption bands  ? cm−1
Proton NMR
Carbon-13 NMR
Other NMR data
Masses of
main fragments


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