Quercetin98%
[synonyms]:3,5,7,3’,4’,-Pentahydroxyflavone
[Herb source]:The commonest flavonoid in higher plants ,usually present in glycosidic form (see rutin,isoquercitrin.quercitin,hyperin and quercimeritrin),but also isolated free from the families compositae,Passiflorae,Rhamnsceae and Solanaceae.
[Structural formula]:
[Molecular Formula]: C15H10O7;
[Molecular Weight]: 302.23
[Physics Properties]:yellow needle crystal
[Pharmacology function]:Inhibits many enzymes ,e.g.,protein kinase C,lipogenases ,lens aldose reductase,3’,5’,-cyclic adenosine monophosphate phosphodiesterases,It is a radical scavenger,Quercetin also in hibits smooth muscle contraction ,and proliferation of rat lymphocytes .It is antibacterial,antiviral and antihepatotoxic,and shows some mutagenic activity and allergenic properties.