Methyl 4-mercaptobenzoate is widely used in organic synthesis as a building block for creating more complex molecules. Its thiol group makes it valuable for forming sulfur-containing compounds, which are essential in pharmaceuticals and agrochemicals. It is also employed in the preparation of ligands for metal complexes, particularly in catalysis and material science. Additionally, this compound finds applications in the development of polymers and resins, where its reactivity can enhance material properties. In research, it serves as a reagent for studying thiol-ene reactions, which are important in click chemistry for creating diverse molecular structures.