Used as a key intermediate in the synthesis of pharmaceuticals and bioactive compounds, particularly in the development of nitrogen-containing heterocycles. Its protected pyrroline structure allows selective reactivity, making it valuable in multi-step organic syntheses, especially in medicinal chemistry for building complex molecules like kinase inhibitors and CNS-active agents. Commonly employed in peptide mimetics and as a building block in combinatorial chemistry due to its stability and ease of deprotection under mild conditions.