PSB 1115 potassium salt is primarily utilized in research settings to study its effects on adenosine receptors, particularly the A2B subtype. It serves as a selective antagonist, helping scientists understand the role of these receptors in various physiological processes, such as inflammation, cardiovascular function, and immune response. This compound is valuable in developing potential therapeutic strategies for conditions like asthma, diabetes, and cancer, where adenosine signaling plays a critical role. Additionally, it aids in the exploration of novel drug candidates targeting adenosine receptor pathways.