Used in peptide synthesis as a building block, particularly for introducing specific side chains into peptides. It is valuable in solid-phase peptide synthesis (SPPS) due to its Fmoc protecting group, which can be easily removed under mild conditions. This compound is also employed in the development of peptidomimetics and bioactive peptides, where the 3-methylphenyl group can enhance interactions with target proteins or receptors. Its application extends to drug discovery and biochemical research, where it aids in creating structurally diverse peptides for studying biological pathways or designing therapeutic agents.