Estradiol (E2 or 17β-estradiol) (also oestradiol) is a sexhormone. Estradiol is the predominant sex hormone present infemales; however, it is present in males, albeit at lower levels,as well. It represents the major estrogen in humans. Estradiol hasnot only a critical impact on reproductive and sexual functioning,but also affects other organs including the bones.

Product Name:   β-estradiol 
Synonyms:   1,3,5-estratriene-3,17beta-diol;17beta-estradiol; 3,17beta-dihydroxy-1,3,5(10)-estratriene;dihydrofolliculin; ESTRADIOL 
CAS RN.:   50-28-2 
EINECS:   200-023-8 
Molecular Weight:   272.38 
Molecular Formula:   C18H24O2 
Melting Point(Celsius degree):   173