Used as an intermediate in the synthesis of (S)-Naproxen, a nonsteroidal anti-inflammatory drug (NSAID). It is primarily employed in pharmaceutical manufacturing to produce enantiomerically pure Naproxen, which is effective in reducing pain, inflammation, and fever. The ester form allows for easier handling and modification during the chemical synthesis process. Additionally, it is utilized in research and development to study the pharmacokinetics and metabolism of Naproxen derivatives.