4-Isopropylbenzenethiol is primarily used in organic synthesis as a building block for more complex chemical compounds. It serves as a key intermediate in the production of pharmaceuticals, agrochemicals, and specialty chemicals. Its thiol group makes it a valuable reagent for creating sulfur-containing compounds, which are often utilized in the development of drugs and pesticides. Additionally, it is employed in the synthesis of ligands for catalysis, particularly in metal-catalyzed reactions, due to its ability to coordinate with metal ions. In material science, it can be used to modify surfaces or create functionalized polymers with specific properties. Its applications also extend to the fragrance industry, where it contributes to the synthesis of certain aromatic compounds.