A natural metabolite of 17B-Estradiol which is devoid of estrogenic activity. Inhibits cell proliferation and angiogenesis. Binds to the colchicine binding site of tubulin, and has been suggested to function as a natural regulator of microtubule assembly and function.Form:Crystalline SolidMelting Point:188-190°CSolubility:Dichloromethane