(S)-1-(3,5-Difluorophenyl)ethanamine is primarily utilized in the pharmaceutical industry as a chiral building block for the synthesis of various active pharmaceutical ingredients (APIs). Its stereochemistry makes it valuable in the development of enantiomerically pure drugs, particularly those targeting the central nervous system. The compound is often employed in the preparation of inhibitors or modulators for enzymes and receptors, contributing to the treatment of neurological disorders, such as depression or anxiety. Additionally, it serves as an intermediate in the production of compounds with potential therapeutic applications in oncology and infectious diseases. Its unique structure allows for selective interactions with biological targets, enhancing drug efficacy and reducing side effects.