Used in the synthesis of pharmaceuticals, particularly as an intermediate for developing neuroactive agents targeting central nervous system pathways. Due to its chiral (4S) structure, it is valuable in asymmetric synthesis for creating enantiomerically pure compounds. It is employed in research settings for studying neurotransmitter receptors, such as serotonin (5-HT) and norepinephrine receptors, and for potential treatments of psychiatric conditions including depression, anxiety, and sleep disorders. Its use is primarily limited to research and development, with no widespread clinical applications yet.