Fulvestrant

**Definition:** An estradiol derivative and estrogen receptor antagonist that is used for the treatment of estrogen receptor-positive, locally advanced or metastatic breast cancer.

**Tree numbers:** - D04.210.500.365.415.248.660 - D06.472.334.851.437.500.500

**Synonyms:** - 7-(9-(4,4,5,5,5-pentafluoropentylsulfinyl)nonyl)estra-1,3,5(10)-triene-3,17-diol