It exhibits strong effect in the treatment of gastric, colon and rectum cancers with fewer side effects. Also it is proved very effective in the treatment of lung cancer. It is used in treatment of leukemia and hydatidiform mole as well.CAS No.: 136572-09-3 Plant Source: Camptotheca Acuminatae Specific rotation: +60 73° Melting Point: 251 257°C PH: 3.0 5.0 Contents (HPLC): 99% min. Water: 7.0 9.0%.