Used in peptide synthesis as a building block, particularly in solid-phase peptide synthesis (SPPS). It is a protected dipeptide derivative (Fmoc-Val-Ala), enabling the sequential assembly of peptides. The Fmoc group provides temporary protection for the N-terminal amino group, while the PAB (p-aminobenzyl) group at the C-terminus acts as a handle for attachment to solid supports or resins. This compound is valuable in creating complex peptides for research in drug development, biochemistry, and molecular biology, including targeted peptide drugs such as anti-cancer or antiviral agents. Its design ensures efficient coupling and deprotection steps, making it a reliable tool for synthesizing peptides with high purity and specificity.