Anglicus nomen: β-estradiol English Synonyms: 17beta-estradiol; dihydrofolliculin;Beta-Estradiol; B-estradiol;Estradiol;beta-estradiol-16;;estradiol CAS: 50-28-2 EINECS Number: 200-023-8 Formula: C18H24O2 MW: 272.382 Assay:99% Aspectus:White Crystalline Powder Usage:Estradiol by estrogen in the treatment of skin absorption agent