N-Cbz-D-aspartic acid is widely used in peptide synthesis as a protecting group for the carboxyl function of aspartic acid. Its application is crucial in the preparation of complex peptides and proteins, where selective protection and deprotection of functional groups are necessary. This compound is particularly valuable in the synthesis of biologically active peptides, including those used in pharmaceuticals and research. Additionally, it serves as an intermediate in the production of various fine chemicals and specialty compounds. Its stability and ease of removal under mild conditions make it a preferred choice in organic and medicinal chemistry workflows.