Z-Ser-NHNH2 is primarily used in peptide synthesis and biochemical research. It serves as a key intermediate in the preparation of more complex peptide structures, particularly in the synthesis of hydrazide derivatives. This compound is valuable in the development of peptide-based drugs and biomolecules due to its ability to facilitate specific chemical reactions, such as coupling and conjugation processes. Additionally, it is employed in the study of protein interactions and enzymatic activities, aiding in the understanding of biological pathways and mechanisms. Its applications also extend to the field of medicinal chemistry, where it contributes to the design and optimization of therapeutic agents targeting various diseases.