4'-tert-Butyldimethylsilyl-6-hydroxy Raloxifene

4'-tert-Butyldimethylsilyl-6-hydroxy Raloxifene (Compound 4) is a reaction product of Raloxifene with tertbutyldimethylsilyl chloride. 4'-tert-Butyldimethylsilyl-6-hydroxy Raloxifene is used to synthesize Raloxifene 6-glucuronide.