Synonyms: 4-Ethyl-4-hydroxy-1H-pyrano-[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione; (+)-Camptothecin; Camptothecin, Camptotheca acuminata; 4-Ethyl-4-hydroxy-1H-pyrano-[3,4:6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione; Camptothecin,95%; Camptothecin; 4-Ethyl-4-hydroxy-1H-pyrano-[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione; Camptothecin