Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other bioactive molecules. Its structure supports the construction of complex organic compounds where a protected pyrrolidine scaffold is required. Commonly employed in peptide chemistry and medicinal chemistry research for introducing constrained amino acid motifs. The benzyloxycarbonyl (Cbz) protecting group allows for selective deprotection under mild conditions, making it valuable in multi-step synthetic routes.