20β-Dihydroprogesterone is an impurity of Progesterone, a steroid hormone secreted by the corpus luteum. Progesterone have various significant physiological roles, such as inducing the maturation and secretory activities of the uterine endothelium and the suppression of ovulation. Progesterone is also implicated in the etiology of breast cancer.

CAS：145-15-3
中文别名：4-Pregnen-20β-ol-3-one;4-孕烯-20-beta-醇-3-酮;
英文别名：4-pregnen-20B-ol-3-one;20beta-Dihydroprogesterone;4-PREGNEN-20-β-OL-3-ONE;
分子式：C21H32O2
分子量：316.478
精确质量：316.24
Psa：37.3
Logp：4.5153

EINECS号：205-650-0

密度：1.09 g/cm3
沸点：451.7ºC at 760 mmHg
闪点：192.4ºC