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