Sources] Trifolium pratense L. [ Active ingredient] Isoflavones Appearance Brown powder Odor Characteristic Assay( HPLC) 8% , 20% Sieve Analysis 100% pass 80 mesh CAS Reg. 574-12-9 Structural Formula C15H10O2 Molecular Weight 222.24 [ Pharmacology function] It increases a women' s risk for developing cardiovascular disease, or " good" cholesterol in pre-and postmenopausal women, help protect against cardiovascular disease, Osteoporosis Menopause, destroy cancer.