((7α,17β)-7-[9-[4,4,5,5,5-pentafluoropentyl)sulfinyl]nonyl]-3,17β-dihydroxyestra-1,3,5(10)-trien-6-one; 7α-{9-[(4,4,5,5,5,-Pentafluoropentyl)sulfinyl]nonyl}estra-1,3,5(10)-triene-6-one-3,17β-diol); Fulvestrant EP Impurity F
((7α,17β)-7-[9-[4,4,5,5,5-pentafluoropentyl)sulfinyl]nonyl]-3,17β-dihydroxyestra-1,3,5(10)-trien-6-one; 7α-{9-[(4,4,5,5,5,-Pentafluoropentyl)sulfinyl]nonyl}estra-1,3,5(10)-triene-6-one-3,17β-diol); Fulvestrant EP Impurity F