Dydrogesterone (INN, USAN, BAN), also known as isopregnenone or 6-dehydroretroprogesterone, as well as 9β,10α-pregna-4,6-diene-3,20-dione, is a steroidal, pure progestin that was developed in the 1950s.

CAS：152-62-5
中文别名：盐酸丙环定.盐酸吡哌立登;9β,10α-Pregna-4,6-diene-3,20-dione;6-去氢逆孕酮;地屈孕酮;
英文别名：Dydrogesterone;(8S,9R,10S,13S,14S,17S)-17-acetyl-10,13-dimethyl-1,2,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-one;
分子式：C21H28O2
分子量：312.446
精确质量：312.209
Psa：34.14
Logp：4.4995

EINECS号：205-806-8

密度：1.1g/cm3
沸点：462.8ºC at 760mmHg
熔点：168-173°C
闪点：172.2ºC
折射率：1.556
蒸汽压：9.55E-09mmHg at 25°C

安全说明：S26-S37/39
WGK Germany：3
危险品运输编码：3276
危险类别：6.1
包装等级：III