This compound is primarily used in peptide synthesis as a protected amino acid derivative. It serves as an intermediate for coupling reactions, where the BOC (tert-butyloxycarbonyl) group protects the amino group, and the ONP (para-nitrophenyl) ester acts as an activating group for the carboxyl function. This allows for controlled and efficient formation of peptide bonds in solid-phase or solution-phase synthesis. It is particularly useful in the synthesis of complex peptides and proteins, where selective protection and deprotection strategies are essential. Its application is common in pharmaceutical research and development, especially in the production of peptide-based drugs and bioactive molecules. The compound’s stability and reactivity make it a valuable tool in organic and medicinal chemistry laboratories.