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Astilbin Neoastilbin

Inquiry
  Post Date: Jun 20,2013
  Expiry Date: Jun 20,2014
  Detailed Description: Cas No. :29838-67-3 Quantity: 10Metric Tons
Payment Method: Astilbin 80%, 90% by HPLC
Astilbin

IUPAC name: (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy-2,3-dihydrochromen-4-one

Other name: Isoastilbin, Neoastilbin, Neoisoastilbin, Taxifolin 3-O-rhamnoside, Taxifolin 3-rhamnoside

Specification: Astilbin 80%, 90% by HPLC

Astilbin is a flavanonol, a type of flavonoid. Astilbin is the (2R-trans)-isomer; neoisoastilbin is the (2S-cis)-isomer and isoastilbin is the (2R-cis)-isomer.

Astilbin can be found in St John's wort (Hypericum perforatum, Clusiaceae, subfamily Hypericoideae, formerly often considered a full family Hypericaceae), in Dimorphandra mollis(Fava d'anta, Fabaceae), 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).

Uses
Astilbin can act as an insecticide against Anticarsia gemmatalis and Spodoptera frugiperda. It shows in vitro antibacterial activity and activity on burn wound healing. Astilbin is used in traditional Chinese medicine.






  CAS Registry Number:

29838-67-3

  Synonyms: ;(2R-trans)-3-((6-Deoxy-alpha-L-mannopyranosyl)oxy)-2-(3,4-dihydroxyphenyl)-2,3-dihydro-5,7-dihydroxy-4H-1-benzopyran-4-one;4H-1-Benzopyran-4-one, 3-((6-deoxy-alpha-L-mannopyranosyl)oxy)-2-(3,4-dihydroxyphenyl)-2,3-dihydro-5,7-dihydroxy-, (2R,3R)-;4H-1-Benzopyran-4-one, 3-((6-deoxy-alpha-L-mannopyranosyl)oxy)-2-(3,4-dihydroxyphenyl)-2,3-dihydro-5,7-dihydroxy-, (2R-trans)-;astilbin;
  Molecular Formula: C21H22O11
  Molecular Weight: 450.3928
  Molecular Structure: 29838-67-3 (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4-oxo-3,4-dihydro-2H-chromen-3-yl 6-deoxy-alpha-L-mannopyranoside

  Company: KINGHERBS LIMITED     [ China ]        
  Contact: Grace Lee
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