Rentiapril racemate is primarily used in the field of cardiovascular research due to its role as an angiotensin-converting enzyme (ACE) inhibitor. It is employed in studies aimed at understanding hypertension and related cardiovascular disorders. Researchers utilize it to explore mechanisms of blood pressure regulation and the effects of ACE inhibition on vascular health. Additionally, it serves as a reference compound in the development and testing of new therapeutic agents targeting the renin-angiotensin system. Its application extends to preclinical trials, where it helps evaluate the efficacy and safety of potential antihypertensive drugs.