Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where protection of amine groups is required. Its ester and Boc-protected amine functionalities make it valuable in peptide coupling and modular drug design. Commonly employed in medicinal chemistry for constructing complex molecules, especially in oncology and central nervous system drug discovery. Also utilized in research settings for labeling and conjugation strategies due to its selective reactivity.