This compound is primarily used in pharmaceutical research and development, particularly in the synthesis of biologically active molecules. It serves as a key intermediate in the production of various drug candidates, especially those targeting neurological and psychiatric disorders. The spiroindoline-piperidine core structure is valuable for designing compounds with potential therapeutic effects, such as enzyme inhibitors or receptor modulators. Its tert-butoxycarbonyl (Boc) protecting group allows for selective chemical reactions, enabling precise modifications during drug synthesis. Additionally, the carboxylic acid functionality provides a versatile handle for further derivatization, making it a crucial building block in medicinal chemistry.