Used in cancer research, particularly for its antitumor properties. It acts as a topoisomerase I inhibitor, disrupting DNA replication in cancer cells, leading to cell death. Studied for potential use in treating solid tumors, including colon, lung, and ovarian cancers. Its lipophilic nature enhances cellular uptake and may improve efficacy compared to other camptothecin analogs. Investigated in nanoparticle formulations to increase stability and targeted delivery.