Used in research as a potent and selective inhibitor of kinesin spindle protein (KSP), making it a candidate for anticancer drug development. It blocks mitotic progression in cancer cells by inhibiting KSP, leading to cell cycle arrest and apoptosis. Studied for its efficacy in tumors resistant to other microtubule-targeting agents, offering potential in treating various solid tumors and hematological malignancies. Its hydrochloride salt form improves solubility and stability for in vitro and in vivo studies.