Irinotecan Impurity 4

Chemical Name: 6-(((S)-4,11-diethyl-4-hydroxy-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-9-yl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic acid

Synonym: (Z)-1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethen-1-amine

Smile: OC1C(OC2=CC=C(N=C(C(N3C4)=CC([C@@](O)(CC)C(OC5)=O)=C5C3=O)C4=C6CC)C6=C2)OC(C(O)=O)C(O)C1O