Chrysophanol  

Molecular Weight:254.24
 
Molecular formula:C15H10O4
 
CAS:  481-74-3
 
Formulation: golden yellow powder
 
Purity:98%HPLC
 
packing:In 10 kg or 20 kg drum with alumimum foil bags
 
storage: In a cool place, to avoid light and protect from oxygen.
 
function: Most intestinal bacterial isolated from human feces catalyzed these metabolic pathways.

Among rhaponticin and chrysophanol 8-o-β-D-glucopyranoside and their metabolites, rhapontigenin

had the most potent inhibitory activity

    On a hyaluronidase, a histamine release from mast cell and passive coutaneous anaphylaxis (PCA)

PCA reaction. The inhibitory activity of rhapontigenin was more potent than that of disodium cromoglycate,

one of the commercial anti-allergic drugs. These results suggest that rhaponticin in the rhizomes of R. undulatum is a prodrug that has an extensitve anti-allergic property