7-[9-[(4,4,5,5,5-Pentafluoropentyl)sulfinyl]nonyl]estra-1,3,5(10),6-tetraene-3,17β-diol (as per EP); Estra-1,3,5(10),6-tetraene-3,17-diol,7-[9-[(4,4,5,5,5-pentafluoropentyl)sul finyl]nonyl]-(7α,17β); Fulvestrant EP Impurity E
7-[9-[(4,4,5,5,5-Pentafluoropentyl)sulfinyl]nonyl]estra-1,3,5(10),6-tetraene-3,17β-diol (as per EP); Estra-1,3,5(10),6-tetraene-3,17-diol,7-[9-[(4,4,5,5,5-pentafluoropentyl)sul finyl]nonyl]-(7α,17β); Fulvestrant EP Impurity E