Irinotecan EP Impurity B Hydrochloride

Chemical Name: (4S)-4-ethyl-4,9-dihydroxy-1H-pyrano[3′,4′:6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione Hydrochloride (as per EP);(S)-4,11-Diethyl-4,9-dihydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione Hydrochloride (as per USP)

Synonym: (1RS)-1-(6-chloro-9H-carbazol-2-yl)ethanol

Smile: O[C@@](C(OC1)=O)(CC)C2=C1C(N3C(C4=NC5=CC=C(O)C=C5C=C4C3)=C2)=O.Cl