... C33H40O15[Molecular Weight]: 676.65[Structural Formula]:[Specification]: 10%,20%,50%,98%[Test method]: HPLC[Product properties]: ... anti-osteoporosis, improve the immune system, cardiovascular system function, increased coronary blood flow, increased myocardial oxygen consumption and ... Solvent extraction → Concentration → Chromatography isolation→ Crystallization→ Icariin. Icariin 10%,20%,50%,98%