Definition: One of the SELECTIVE ESTROGEN RECEPTOR MODULATORS with tissue-specific activities. Tamoxifen acts as an anti-estrogen (inhibiting agent) in the mammary tissue, but as an estrogen (stimulating agent) in cholesterol metabolism, bone density, and cell proliferation in the ENDOMETRIUM.
pyrrolidino-4-iodotamoxifen [ 1-(4-iodophenyl)-1-(4-(2-pyrrolidinoethoxy)phenyl)-2-phenyl-1-butene,4-iodopyrrolidinotamoxifen,Pyr-I-Tam,idoxifene ] structure given in first source