Pregna-​4,​9(11)​-​diene-​3,​20-​dione，C21H28O2

分子式：C21H28O2；分子量：312.45；别名：Progesterone Impurity K；应用：Pregna-​4,​9(11)​-​diene-​3,​20-​dione is a Progesterone (P755900) impurity, a steroid hormone produced by the corpus luteum. Induces maturation and secretory activity of the uterine endothelium; suppresses ovulation. Progesterone is implicated in the etiology of breast cancer.。