L-Tyrosine methyl ester is widely used in biochemical research, particularly in the study of enzyme mechanisms and protein interactions. It serves as a substrate for various enzymes, including proteases and kinases, helping to elucidate their catalytic activities and specificity. In peptide synthesis, it acts as a building block for creating modified peptides, enabling the exploration of structure-activity relationships. Additionally, it is employed in the development of drug delivery systems, where its properties enhance the stability and bioavailability of therapeutic compounds. Its role in neuroscience research is also notable, as it aids in investigating neurotransmitter pathways and brain function.