Used as an intermediate in organic synthesis, particularly in pharmaceutical manufacturing. It serves as a protected amine building block in the development of active pharmaceutical ingredients (APIs), where the tert-butoxycarbonyl (Boc) group provides stability during reactions and can be easily removed under mild acidic conditions. The cyclopropyl and aldehyde functional groups allow for further structural modifications, making it valuable in the synthesis of complex molecules such as protease inhibitors or other bioactive compounds. Commonly employed in research settings for constructing novel drug candidates.