Used as a key intermediate in the synthesis of nonsteroidal anti-inflammatory drugs (NSAIDs), particularly naproxen and its derivatives. It plays an essential role in enantioselective production of active pharmaceutical ingredients due to its chiral amine structure. The compound is also employed in the development of optically active drugs where stereochemistry influences therapeutic efficacy and safety. Its hydrochloride salt form enhances stability and solubility, making it suitable for various pharmaceutical processes including crystallization and purification steps.