... -1H-pyrano-[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione; (+)-Camptothecin; Camptothecin, Camptotheca acuminata; 4 ... -1H-pyrano-[3,4:6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione; Camptothecin,95%; Camptothecin; Campothecin; N ... -03-4C20H16N2O4348.36Light Yellow crystalline powder98%, 99% Camptothecin is a quinoline-based alkaloid found in the barks of the chinese camptotheca ...