<unk> (E1S) is an<unk> n medication and naturally occurring steroid hormone. It is used in menopausal hormone therapy among other indications. As the sodium salt (sodium<unk> , it is the major<unk> n component of conjugated<unk> ns (Premarin) and esterified<unk> ns (Estratab, Menest). In addition, E1S is used on its own as the piperazine salt estropipate (piperazine<unk>  Ogen). The compound also occurs as a major and important metabolite of estradiol and<unk> . E1S is most commonly taken by mouth, but in the form of Premarin can also be taken by parenteral routes such as transdermal, vaginal, and injection.
Estrone sulfate 
Estradiol undecylate
Estradiol dienantate
Estradiol furoate
Estradiol enantate
Androstenediol dipropionate
Estradiol dipropionate
Estradiol hemisuccinate