Used as a key chiral intermediate in the synthesis of local anesthetics such as bupivacaine, particularly in the production of stereoselective pharmaceutical agents. Its (S)-structural configuration supports enhanced binding to sodium channels, improving the duration and selectivity of nerve block effects. Commonly employed in the development of long-acting anesthetic drugs with reduced systemic toxicity. Also utilized in asymmetric synthesis for exploring new bioactive molecules due to its stable chiral center and favorable pharmacokinetic properties.