Purified racemic lasofoxifene and purified lasofoxifene D-tartrate and a mehtod for effective purification of racemic lasofoxifene

A method for removing impurities from racemic cis-6-phenyl-5-[4-(2-pyrroli- din-1-ylethoxy)phenyl]-5,6,7,8-tetrahydronaphthalen-2-ol and purified cis-6-phenyl-5-[4-(2-pyrrolidin-1-ylethoxy)phenyl]-5,6,7,8-tetrahydronaph- thalen-2-ol useful as an estrogen agonist/antagonist.