Pipendoxifene

**Semantic type:** Organic Chemical|Pharmacologic Substance

**Definition:** A nonsteroidal 2-phenyl indole and a selective estrogen receptor modulator (SERM) with potential antineoplastic activity. Pipendoxifene antagonizes binding of estradiol to estrogen receptor alpha (ER alpha), thereby inhibiting ER alpha-mediated gene expression, interfering with estrogen activity and inhibiting estrogen-stimulated growth in estrogen-dependent breast cancer. In addition, this agent also exerts intrinsic estrogenic activity depending on the tissue types.

**Synonyms:** - 2-(4-Hydroxyphenyl)-3-methyl-1-[4-(2-piperidin-1-ylethoxy)benzyl]-1H-indol-5-ol Hydrochloride - ERA 923 - ERA-923 - ERA-923 - PIPENDOXIFENE