CCK-A receptor inhibitor 1 is primarily used in research settings to study the role of CCK-A receptors in various physiological processes. It helps in understanding the mechanisms of appetite regulation, digestion, and satiety, as CCK-A receptors are involved in these functions. This compound is also utilized in investigating potential treatments for gastrointestinal disorders, such as irritable bowel syndrome (IBS) and pancreatitis, by blocking CCK-A receptor activity. Additionally, it aids in exploring the relationship between CCK-A receptors and anxiety or pain modulation, providing insights into therapeutic targets for related conditions. Its application extends to pharmacological studies aimed at developing new drugs for metabolic and neurological disorders.