Used as an antitumor agent, particularly in cancer therapy, due to its ability to inhibit topoisomerase I, an enzyme critical for DNA replication in cancer cells. It shows activity against various solid tumors, including lung, colon, and breast cancers. Its lipophilic nature enhances cellular uptake and blood-brain barrier penetration, making it a candidate for treating brain tumors. Also investigated for improved formulations such as nanoparticles and liposomes to increase solubility and reduce toxicity.