Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of active pharmaceutical ingredients (APIs) involving pyrrolidine-based structures. This compound features a pyrrolidine core with a cyanomethyl group at the 3-position and a tert-butoxycarbonyl (Boc) protecting group on the nitrogen. The cyano group enables selective reductions to aminomethyl functionalities, while the Boc group can be deprotected under mild acidic conditions to reveal the free pyrrolidine amine. These properties allow for versatile reactions in multi-step organic syntheses, making it valuable in drug discovery for central nervous system agents and enzyme inhibitors. Commonly employed in the preparation of proline analogs and peptidomimetics due to the stability and conformational properties of the pyrrolidine ring. Suitable for use in coupling reactions and catalytic transformations, supporting efficient route design in medicinal chemistry.