Used primarily in biochemical research to study enzyme activity, particularly that of angiotensin-converting enzyme (ACE). It serves as a substrate in assays to measure ACE inhibition, which is crucial for developing and testing antihypertensive drugs. Additionally, it aids in understanding peptide metabolism and enzyme kinetics in various biological systems. Its application extends to investigating the role of ACE in cardiovascular and renal diseases, contributing to advancements in therapeutic strategies.