Product name: extractive form Chinese yam       
Plant origin: dried rootstock of Dioscorea opposita Thunb.
Plant origin: Henan, Shaanxi, Guizhou, Sichuan
Effective constituent: Diosgenin
Product specification: Diosgenin  5%-98%;
Testing method: HPLC
Appearance: light yellow to almot white powder
Smell character: light flavor
Function and uses: tonifying spleen, nourishing the stomach, tonifying kidney, arresting seminal emission; for insufficiency of the spleen, chronic diarrhea, breath with cough, emission due to the kindney deficiency, morbid leucorrh, frequent micturition
Solubility: insoluble in water, petroleum ether, benzene; soluble in methyl alcohol, ethyl alcohol, acetic acid; lightly soluble in acetone and amyl alcohol
Scope of application: 于health care products; material for synthesis of steroid hormone and contraceptive

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