L-Tyrosine hydrazide is primarily utilized in biochemical research and pharmaceutical development. It serves as a key intermediate in the synthesis of various bioactive compounds, including peptide-based drugs and enzyme inhibitors. Its hydrazide functional group makes it valuable for conjugation reactions, enabling the preparation of targeted drug delivery systems. Additionally, it is used in the study of enzyme mechanisms and protein interactions, particularly in understanding tyrosine-related pathways. Its role in the development of antioxidants and anti-inflammatory agents is also noteworthy, contributing to advancements in therapeutic applications.