Z-D-Ala-Gly-OH is a peptide derivative that finds application in biochemical research, particularly in the study of enzyme specificity and peptide synthesis. It is used as a substrate or intermediate in the development of peptide-based drugs and bioactive compounds. Its structure allows for the exploration of stereochemical effects in enzymatic reactions, aiding in the understanding of peptide bond formation and cleavage mechanisms. Additionally, it serves as a building block in the synthesis of more complex peptides, contributing to advancements in medicinal chemistry and drug design. Its role in mimicking natural peptide sequences makes it valuable for investigating biological pathways and designing therapeutic agents.