(R)-1-(4-Fluorophenyl)ethanamine is primarily used in the pharmaceutical industry as a chiral building block for the synthesis of various active pharmaceutical ingredients (APIs). Its enantiomeric purity makes it valuable in the development of drugs that require specific stereochemistry to achieve desired therapeutic effects. It is often employed in the production of antidepressants, antipsychotics, and other central nervous system (CNS) drugs, where the (R)-configuration plays a critical role in binding to biological targets. Additionally, it serves as an intermediate in organic synthesis, particularly in the preparation of compounds with fluorinated aromatic rings, which are known to enhance drug potency and metabolic stability. Its applications also extend to research and development, where it is used to study chiral interactions and optimize drug efficacy.