(S)-2-(3,4-Difluorophenyl)oxirane is primarily used as a key intermediate in the synthesis of various pharmaceutical compounds. Its oxirane (epoxide) ring structure makes it a versatile building block in organic synthesis, particularly in the development of drugs targeting central nervous system disorders. It is often employed in the production of chiral molecules, where its stereochemistry plays a critical role in achieving the desired biological activity. Additionally, this compound is utilized in the research and development of enzyme inhibitors and receptor modulators, contributing to advancements in medicinal chemistry and drug discovery.