3,4,5-Trimethylbenzoic acid is primarily used in organic synthesis as a building block for more complex chemical compounds. It serves as a precursor in the production of pharmaceuticals, particularly in the development of drugs with specific therapeutic properties. The compound is also employed in the synthesis of agrochemicals, where it contributes to the creation of herbicides and pesticides. Additionally, it finds application in material science, aiding in the development of polymers and resins with enhanced properties. Its structural features make it a valuable intermediate in various industrial chemical processes.