Acm-thiopropionic acid is primarily utilized in peptide synthesis as a protective group for thiol functionalities. Its application ensures that thiol groups remain stable during the synthesis process, preventing unwanted side reactions. This compound is particularly valuable in the production of complex peptides where precise control over thiol reactivity is crucial. Additionally, it finds use in bioconjugation techniques, where it aids in the attachment of peptides or proteins to other molecules, enhancing the functionality of the resulting conjugates. Its role in maintaining the integrity of thiol groups makes it a key reagent in both research and industrial settings focused on peptide chemistry.