1-Phenylcyclopropanamine hydrochloride is primarily utilized in the field of medicinal chemistry and drug development. It serves as a key intermediate in the synthesis of various pharmaceutical compounds, particularly those targeting the central nervous system. Its structure is valuable in the creation of molecules that interact with neurotransmitter systems, making it useful in the development of potential antidepressants, anxiolytics, and other psychotropic drugs. Additionally, it is employed in research to study the effects of cyclopropylamine derivatives on biological systems, aiding in the discovery of novel therapeutic agents. Its role in organic synthesis also extends to the preparation of complex molecules for further pharmacological evaluation.