Used as an intermediate in organic synthesis, particularly in the development of pharmaceuticals and bioactive molecules. Its functional groups—carboxylic acid, thiol, and imide—allow for versatile chemical modifications, making it valuable in constructing complex heterocyclic compounds. Commonly employed in the preparation of protease inhibitors and enzyme-targeted drugs due to its ability to mimic peptide bonds and interact with active sites. Also utilized in material science for designing functional polymers and sensors, where its sulfur and acidic groups contribute to metal coordination and surface binding.