(1R,2S)-2-(4-Fluorophenyl)cyclopropanamine Hydrochloride is primarily used in the field of medicinal chemistry and pharmacology. It serves as a key intermediate or building block in the synthesis of various pharmaceutical compounds. Its structure, featuring a cyclopropane ring and a fluorophenyl group, makes it valuable for developing drugs that target the central nervous system (CNS). Specifically, it has been explored for its potential in creating antidepressants, anxiolytics, and other neuropsychiatric medications due to its ability to interact with neurotransmitter systems. Additionally, its chiral nature allows for the development of enantiomerically pure drugs, enhancing specificity and reducing side effects. Researchers also investigate its role in modulating serotonin and dopamine receptors, which are critical in treating mood disorders.