1,2,3,4-Tetrahydronorharman-1-one is primarily used in research and development within the field of medicinal chemistry. It serves as a key intermediate in the synthesis of various biologically active compounds, particularly those targeting the central nervous system. This chemical is often explored for its potential in developing treatments for neurological disorders due to its structural similarity to naturally occurring alkaloids that interact with neurotransmitter systems. Additionally, it is studied for its role in creating novel therapeutic agents that may exhibit antidepressant, anxiolytic, or neuroprotective properties. Its applications extend to pharmacological studies aimed at understanding its mechanism of action and optimizing its efficacy for potential clinical use.