Estradiol,17β-estradiol APIs
CAS number     50-28-2
Synonyms     (8R,9S,13S,14S,17S)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,17-diol
Chemical data
Formula     C18H24O2
Mol. mass     272.38 g/mol

Systematic (IUPAC) name:(17β)-estra-1,3,5(10)-triene-3,17-diol
Clinical data
Trade names :Climara, Menostar
Pregnancy cat.
Legal status:S4 (Au), POM (UK), ?-only (U.S.)

Routes :Oral, transdermal
Pharmacokinetic data
Bioavailability     97–99% is bound
Metabolism     Liver
Half-life     ~13-17 hours
Excretion     Urine, and sweat glands