This chemical is primarily used in peptide synthesis as a protected form of serine. The Boc group protects the amino group, while the phosphate group is protected by benzyl groups, allowing selective deprotection during the synthesis process. It is particularly useful in the preparation of phosphorylated peptides, which are important in studying protein phosphorylation, a key regulatory mechanism in cellular processes. The compound enables researchers to incorporate phosphorylated serine residues into peptides, aiding in the study of signal transduction pathways, enzyme activity, and protein-protein interactions. Its application is crucial in biochemistry and molecular biology for understanding the role of phosphorylation in various biological functions.