Z-Ser-OH is primarily utilized in peptide synthesis as a building block. It serves as a protected form of serine, ensuring the amino acid's side chain remains intact during the synthesis process. This chemical is crucial in the production of complex peptides and proteins, where precise control over amino acid incorporation is required. It is also employed in biochemical research to study peptide structures and functions, aiding in the development of therapeutic peptides and drugs. Additionally, Z-Ser-OH finds application in the preparation of peptide-based materials and in the synthesis of peptide conjugates for targeted drug delivery systems.