Z-DL-Met-OH is primarily used in peptide synthesis as a building block for creating peptides with specific sequences. It is particularly valuable in research laboratories for studying peptide structures and functions. Additionally, it serves as a precursor in the development of pharmaceuticals, especially in drugs that target metabolic pathways or require methionine derivatives. Its application extends to biochemical studies where it helps in understanding enzyme interactions and protein modifications. In industrial settings, it may be utilized in the production of specialized compounds for nutritional supplements or as an intermediate in organic synthesis.