英文别名Camptothecin Impurity 6; 20R-Camptothecin; (R)-(-)-Camptothecin; (R)-(-)-Camptothecine; (R)-4-Ethyl-4-hydroxy-1H-pyrano[3’,4’:6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione; (R)-Camptothecin; Irinotecan Hydroxyl Acid 19; Irinotecan Impurity 19 HCl; (4R)-4β-Ethyl-4-hydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione 
