Product name: Cynanchum otophyllum extractive   
Plant origin: Heilongjiang, Jilin, Liaoning, Hebei, Henan, Shandong, Shaanxi
Effective constituent: paeoniflorin
Product specification: 10%~40%
Testing method: HPLC
Appearance: brown powder to almost white powder
Smell character:
CAS No.:  23180-57-6
Molecular weight: 480.45
Molecular formula: C₂₃H₂₈O₁₁
Structural formula:  

Function and uses:
anti-inflammatory action
abirritation
hypnosis and anticonvulsion effect
Recommended dosage: 1~5g
Solubility: soluble in water
Scope of application: for treatment of rheumatic arthritis,coronary disease and gynecological disease

Above information has not been approved by State Food and Drug Administration yet. From published document and for reference only