Botanical Source: Engelhardtia roxburghiana Wall.
CAS No.: 29838-67-3
Part Used: Bark or Leaf
Specification: Astilbin 15%, 80% by HPLC
Molecular Formula: C21H22O11
Molecular Weight: 450.4
Astilbin is a flavanonol, a type of flavonoid; Neoisoastilbin is the (2S-cis)-isomer and isoastilbin is the (2R-cis)-isomer. Astilbin can be found in St John's wort, in Dimorphandra mollis, in the leaves of Harungana madagascariensis (Hypericaceae), in the rhizome of Astilbe thunbergii, in the root of Astilbe odontophylla(Saxifragaceae), in the rhizone of Smilax glabra(Chinaroot, Smilacaceae) and in the bark of Hymenaea martiana. It can be isolated from Kohki tea processed from Engelhardtia chrysolepis (huang-qui).
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