(S)-2-(Pyrrolidin-3-yl)acetic acid is primarily utilized in the pharmaceutical industry as a key intermediate in the synthesis of various bioactive compounds. Its chiral structure makes it valuable in the development of enantioselective drugs, particularly those targeting the central nervous system. It is often employed in the production of inhibitors for enzymes like monoamine oxidase (MAO) and other neuroactive agents, which are crucial in treating neurological disorders such as Parkinson's disease and depression. Additionally, its pyrrolidine ring and carboxylic acid functionality allow it to serve as a building block in the design of peptide mimetics and small molecule therapeutics, enhancing drug stability and bioavailability.