Used primarily in peptide synthesis, this compound serves as a building block for creating peptides with specific sequences. It is particularly valuable in solid-phase peptide synthesis (SPPS) due to its Fmoc protecting group, which can be easily removed under basic conditions without affecting other sensitive groups. The tert-butyl ester protection on the aspartic acid side chain ensures stability during the synthesis process and can be cleaved under acidic conditions. This makes it a versatile reagent for producing peptides with aspartic acid residues, which are crucial in various biological and pharmaceutical applications, including drug development and biochemical research. Its use ensures high purity and efficiency in peptide chain assembly.