OT-R antagonist 1 is primarily utilized in research settings to study the role of oxytocin receptors in various physiological and behavioral processes. It is commonly employed in neuroscience and endocrinology studies to investigate the effects of oxytocin receptor blockade on social behaviors, stress responses, and reproductive functions. Additionally, it serves as a valuable tool in exploring potential therapeutic applications for conditions such as anxiety, autism spectrum disorders, and certain reproductive health issues. Its use in preclinical models helps to elucidate the complex mechanisms of oxytocin signaling and its implications in both health and disease.