Estradiol cypionate (INN, USAN) (brand names Depo-Estradiol, Depofemin, Estradep, and many others), or estradiol cipionate, also known as estradiol 3-cyclopentylpropionate, is a synthetic estrogen ester, specifically the 3-cyclopentylpropanoyl ester, of the natural estrogen estradiol. It was first introduced in 1952 by Upjohn in the United States, and has been in widespread use since. Estradiol cypionate behaves as a sustained-release prodrug to estradiol, and therefore is considered to be natural estrogen.

CAS：313-06-4
中文别名：Β-雌二醇-17-脓蓝素;β-雌二醇-17-环戊丙酸酯;
英文别名：Depofemin;β-Estradiol 17-Cyclopentylpropionate;Estradiol Cypionate;
分子式：C26H36O3
分子量：396.562
精确质量：396.266
Psa：46.53
Logp：6.1305

UNII：7E1DV054LO

外观与性状：白色或灰白色结晶粉末
密度：1.15g/cm3
沸点：532.8ºC at 760mmHg
熔点：≥300°C(lit.)
闪点：207.7ºC
折射率：1.579

RTECS号：KG4600000
安全说明：S53-S22-S36/37/39-S45-S26
危险类别码：R20/21/22; R36/37/38; R45; R46; R61
WGK Germany：3
危险品标志：T

用途
长效雌激素。