Isoquercetin, isoquercitrin or isotrifoliin[1] is a flavonoid, a type of chemical compound. It is the 3-O-glucoside of quercetin. Isoquercitrin can be isolated from various plant species including Mangifera indica (mango)[2] and Rheum nobile (the Noble rhubarb). It is also present in the leaves of Annona squamosa, Camellia sinensis (tea).[3][4] and Vestia foetida[5]
Names | |
---|---|
IUPAC name
3-(β-D-Glucopyranosyloxy)-3′,4′,5,7-tetrahydroxyflavone
| |
Systematic IUPAC name
2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-3-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-4H-1-benzopyran-4-one | |
Other names
Isoquercitroside
Isoquercitin Isoquercetin Trifoliin Isotrifolin Trifoliin A Isohyperoside Isotrifoliin Quercetin-3-glucoside Quercetin-3-O-glucoside Quercetin 3-O-β-D-glucopyranoside | |
Identifiers | |
| |
3D model (JSmol)
|
|
ChemSpider |
|
ECHA InfoCard | 100.123.856 |
KEGG |
|
PubChem CID
|
|
UNII |
|
CompTox Dashboard (EPA)
|
|
| |
| |
Properties | |
C21H20O12 | |
Molar mass | 464.379 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
verify (what is ?)
Infobox references
|
The lambda-max for isoquercetin is 254.8 and 352.6 nm.
Isoquercetin is presently being investigated for prevention of thromboembolism in selected cancer patients[6] and as an anti-fatigue agent in kidney cancer patients treated with sunitinib.[7]
There is a single case report of its use in the successful treatment of prurigo nodularis, a difficult to treat pruritic eruption of the skin.[8]
However it belongs to the PAINS (Pan-assay interference compounds) categories of chemicals.[9]