E1S, also known as<unk>  3-sulfate or as estra-1,3,5(10)-trien-17-one 3-sulfate, is a naturally occurring<unk>  steroid and a derivative of<unk> . It is an<unk> n conjugate or ester, and is specifically the C3<unk>  ester of<unk> . Salts of E1S include sodium<unk> and estropipate (piperazine<unk> . The logP of E1S is 1.4.
Estrone sulfate 
Estradiol undecylate
Estradiol dienantate
Estradiol furoate
Estradiol enantate
Androstenediol dipropionate
Estradiol dipropionate
Estradiol hemisuccinate