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RU_(486)是一种与孕酮受体有高度亲和力的人工合成类固醇,它与孕酮竞争性地和受体结合,是目前首选的孕酮拮抗剂。近年来,临床上应用于终止早期妊娠及试用于避孕和死胎引产等。对RU_(486)和受体的结合能
RU_ (486), a synthetic steroid with high affinity for progesterone receptors, is competitive with progesterone for receptor binding and is currently the preferred progesterone antagonist. In recent years, the clinical application of termination of early pregnancy and trial of contraception and stillbirth induction. The binding energy to RU_ (486) and receptor