Product Name : Quercetin; Quercetin Dihydrate;

Molecular Formula: C15H14O9

Molecuar weight: 338.27

Specification :95% by HPLC,98% by UV

Appearance: Yellow Crystalline Powder , insoluble in water

CAS NO. 6151-25-3

What is Quercetin ?

Quercetin is a flavonoid widely distributed in nature . it is a potent antioxidant and has anti-inflammatory activity ,protecting cellular structures and

blood vessels from the damaging effects of free radicals.It improves blood vessel strength.quercetin inhibits the activity of catecholoMethyltransferasethat breaka down the neurotransmiter norepine phrine. This effect may lead to elevated levels of norepine-phrine and an increase in energy

expenditure and fat oxidation.

Differences of Quercetin ; Quercetin dihydrate , Quercetin Anhydrous, Dihydroquercetin ?

I believe that many extract industry comrades, the distinction between several kinds of quercetin is still very fuzzy, there is no clear concept, next I

give you a summary, I hope to help you!
Quercetin generally refers to quercetin dihydrate, quercetin dihydrate, as the name implies, its structural formula contains two crystalline water,

anhydrous quercetin is the quercetin dihydrate structural formula of the two crystalline water removed, dihydroquercetin is a reduced form of

quercetin, that is, the quercetin mother nucleus in the 2,3 position of the double bond hydrogenation of the product.

In terms of solubility, quercetin dihydrate and quercetin anhydrous are virtually insoluble in water, and dihydroquercetin after hydrogenation of the

quercetin double bond is soluble in water.
In terms of plant origin, anhydrous quercetin is obtained by removing two crystalline waters from quercetin dihydrate when it becomes anhydrous at

95-97 degrees Celsius, so they come from the same source, the flower buds of locust Sophora japonica L, a legume; dihydroquercetin comes from two

sources, one is obtained by hydrogenation of the double bond at the 2,3 position in the quercetin parent nucleus, and the other one is obtained by

extraction from larch segments. The other is extracted from larch segments.