Z-D-Met-OH is widely used in peptide synthesis as a protected form of methionine. It serves as a building block in the production of peptides, ensuring the methionine residue remains intact during the synthesis process. This compound is particularly valuable in research and pharmaceutical development, where precise peptide sequences are required for studying biological functions or creating therapeutic agents. Its application extends to the synthesis of complex peptides and proteins, contributing to advancements in drug discovery and biochemical studies. Additionally, it is utilized in the preparation of peptide-based vaccines and other biomedical applications where controlled and efficient peptide assembly is critical.