Fulvestrant Impurity 8

Chemical Name: 4,4,5,5,5-pentafluoropentyl methanesulfonate

Synonym: Doxorubicin ; (8S,10S)-10-(((2R,4S,5S,6S)-4-amino-5-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-6,8,11-trihydroxy-8-(2-hydroxyacetyl)-1-methoxy-7,8,9,10-tetrahydrotetracene-5,12-dione hydrochloride