Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where a protected pyrrolidine scaffold is required. Its Boc-protected amine group allows for selective reactivity, making it valuable in multi-step organic syntheses, especially in the preparation of protease inhibitors and other bioactive molecules. Commonly employed in medicinal chemistry for constructing complex nitrogen-containing heterocycles with high stereocontrol.