MN58b is primarily used in research settings to study its effects on cancer cells. It functions as an inhibitor of choline kinase, an enzyme that plays a critical role in the metabolism of cancer cells. By blocking this enzyme, MN58b disrupts the production of phosphatidylcholine, a key component of cell membranes, thereby inhibiting the growth and proliferation of cancer cells. This makes it a valuable tool for investigating potential therapeutic strategies for various types of cancers, particularly those that are highly dependent on altered lipid metabolism. Researchers utilize MN58b to better understand the mechanisms of cancer cell survival and to explore its potential as a targeted cancer treatment.