DL-Leucylglycine is primarily utilized in biochemical research as a dipeptide model to study peptide synthesis and degradation mechanisms. It serves as a substrate for enzymes like peptidases and proteases, aiding in understanding their catalytic activities and specificity. This compound is also employed in cell culture studies to investigate peptide transport and metabolism in various biological systems. Additionally, it finds use in the development of peptide-based drugs and nutraceuticals, contributing to advancements in therapeutic and nutritional sciences. Its role in mimicking natural peptides makes it valuable for exploring protein interactions and designing bioactive molecules.