(S)-()-1-Aminoindan is primarily utilized in the pharmaceutical industry as a chiral building block for the synthesis of various active pharmaceutical ingredients (APIs). Its unique structure makes it valuable in the development of drugs targeting the central nervous system, particularly for conditions like Parkinson's disease and depression. Additionally, it serves as a key intermediate in the production of rasagiline, a medication used to manage Parkinson's symptoms. The compound's chiral nature is also exploited in asymmetric synthesis, enabling the creation of enantiomerically pure substances with enhanced therapeutic efficacy and reduced side effects.