What is Isoquercitrin powder (Sophora japonica extract)?

Isoquercitrin powder (Sophora japonica extract) is a flavonoid, a type of chemical compound. It is the 3-O-glucoside of quercetin, which is decomposed enzymatically by Rutin with function of lower blood pressure, anti-inflammatory effect. And it also can be isolated from various plant species including Mangifera indica and Rheum nobile. It is also present in the leaves of Annona squamosa and Camellia sinensis.

It is presently being investigated for prevention of thromboembolism in selected cancer patients and as an anti-fatigue agent in kidney cancer patients treated with sunitinib. Given that water solubility is enhanced by glycosylation, scientists have evaluated the bioavailability of several orally-administered quercetin glycosides. Of the various types of quercetin, the enzymatically modified form, isoquercitrin, has been identified as having the greatest bioavailability.

Isoquercitrin Benefits

  • Potential protective effects against oxidative neuronal injuries and brain ischemia.
  • Antidepressant activity.
  • Anti-inflammatory effects.
  • Prevention of diabetic complications.
  • Lowering blood level.

What is Sophora Japonica Extract?

Isoquercitrin (Sophora japonica extract) Property

AliasIsoquercitrin, Isoquercitroside, Isoquercitin, Trifoliin, Isotrifolin, Trifoliin A, Isohyperoside, Isotrifoliin, Quercetin-3-glucoside, Quercetin-3-O-glucoside, Quercetin 3-O-β-D-glucopyranoside
Botanical SourceSophora japonica L.
Part of UsedBud
Specifications90% HPLC
AppearanceYellow Crystal Powder
Cas No.482-35-9
Chemical FormulaC21H20O12
Melting Point314-317 DEG C, water soluble <0.1 g/100 at 21℃
Solubilitysoluble in cold water, soluble in alkali solution deep yellow

Shelf Life

2 Years


Store in tightly sealed containers in cool and dry place, away from moisture, light, oxygen.


  • Packed in paper-drums and two plastic-bags inside. N.W:25kgs .I.D.35×H51cm.
  • 1Kg/Bag, aluminum foil bag vacuum packing.
  • Sample, double sealed water plastic bags inside with the aluminum bag outside.

Where to buy Isoquercitrin powder (Sophora japonica extract)?

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