This peptide is primarily used in research settings to study the physiological and behavioral effects of cholecystokinin (CCK) in the body. It is often employed to investigate the role of CCK in appetite regulation, digestion, and satiety, as it mimics a fragment of the CCK molecule. Researchers utilize it to explore its interaction with CCK receptors, particularly in the brain and gastrointestinal tract, to better understand its influence on feeding behavior and metabolic processes. Additionally, it serves as a tool to differentiate between the effects of sulfated and non-sulfated forms of CCK, providing insights into the importance of post-translational modifications in peptide function. Its application is crucial in advancing knowledge of neuroendocrine signaling and potential therapeutic targets for conditions like obesity and eating disorders.