PolydatinPolydatin 
Polygonum cuspidatum P. E 
Herb Source: From the dry root or rhizome of Polygonum cuspidatum Sieb. Et zucc. 
Active ingredients: Polydatin 
Synonym: Piceid 
Purity: Polydatin≥20%~50%~80%~98% Tested By HPLC 
CAS No: 65914-17-2 
Molecular Formula: C20H22O8 
Molecular Weight: 390.40 
Brief: White crystal powder 
Melting Point: 223-226 
Optical rotation: -77.5 (c=0.2, EtOH) 
Pharmacolog: It's antimicrobial, antivirus, especially to Staphylococcus, A or B streptococcus, E. Coli. And some virus. It's mainly used to ease cough, relieve the phlegm, scavenge the free radicals, antiasthmatic, adjust the lipid, lower the cholesterol.