MPO-IN-1 is primarily used in research settings to study the role of myeloperoxidase (MPO) in various biological processes. It serves as a potent inhibitor of MPO, an enzyme involved in the production of reactive oxygen species (ROS) during inflammation. By inhibiting MPO, this compound helps researchers investigate the enzyme's impact on inflammatory diseases, such as atherosclerosis, neurodegenerative disorders, and chronic inflammatory conditions. Additionally, MPO-IN-1 is utilized in drug discovery efforts to develop therapeutic agents targeting MPO-related pathways, potentially offering treatments for conditions driven by excessive oxidative stress and inflammation. Its application extends to understanding the mechanisms of tissue damage and immune responses in experimental models.