MRS1523 is primarily used in research settings as a selective antagonist for the A3 adenosine receptor. Its application is significant in studying the role of A3 receptors in various physiological and pathological processes. Researchers utilize MRS1523 to investigate its potential therapeutic effects in conditions such as inflammation, cancer, and cardiac ischemia. By blocking A3 receptor activity, it helps in understanding the receptor's involvement in modulating immune responses and cell proliferation. Additionally, MRS1523 is employed in experimental models to explore its neuroprotective properties and its impact on pain perception, providing insights into potential treatments for neurological disorders and chronic pain. Its use in these studies contributes to the development of targeted therapies that could offer more effective and specific treatment options for various diseases.