OTSSP167 is primarily utilized in cancer research due to its role as a potent inhibitor of MELK (maternal embryonic leucine zipper kinase). It is extensively studied for its potential to suppress the growth of various cancer cells, particularly in breast cancer, glioblastoma, and other aggressive tumor types. Researchers employ OTSSP167 to investigate its effects on cell proliferation, apoptosis, and tumor regression in preclinical models. Its ability to target MELK makes it a promising candidate for developing novel therapeutic strategies, especially in cases where conventional treatments show limited efficacy. Additionally, OTSSP167 is used in molecular biology studies to better understand the signaling pathways and mechanisms associated with MELK in cancer progression.