Fulvestrant Impurity C

Chemical Name: 7ξ-[9-[[9-[(4,4,5,5,5-pentafluoropentyl)sulfinyl]nonyl]sulfinyl]nonyl]estra-1,3,5(10)-triene-3,17β-diol (as per EP) ; Estra-1,3,5(10)-triene-3,17-diol,7-{9-[9-[(4,4,5,5,5-pentafluoro pentyl)sulfinyl]nonylsulfinyl]nonyl}-(7α,17β) (as per USP)

Smile: C[C@@]12[C@@H](O)CC[C@@]1([H])[C@]3([H])[C@H](CCCCCCCCCS(CCCCCCCCCS(CCCC(F)(C(F)(F)F)F)=O)=O)CC4=C(C=CC(O)=C4)[C@@]3([H])CC2