Raloxifene is a member of the class of 1-benzothiophenes that is 1-benzothiophene in which the hydrogens at positions 2, 3, and 6 have been replaced by p-hydroxyphenyl, p-[2-(piperidin-1-yl)ethoxy]benzoyl, and hydroxy groups, respectively. It has a role as a bone density conservation agent, an estrogen receptor modulator and an estrogen antagonist. It is a member of phenols, an aromatic ketone, a member of 1-benzothiophenes and a N-oxyethylpiperidine. It is a conjugate base of a raloxifene(1+).