The absorption in ovary is only less than liver and suprarenal, and its maximum absorption is appeared at 0.5 hours. The concentration in uterus can keep a little varion within 24 hours.

• 其在卵巢中的分布量仅次于肝脏和肾上腺；其吸收量在0.；5h时达到高峰；且在子宫中24h内可以保持一定的浓度；即可达到止早孕的目的;