3-Tert-butoxybenzoic acid is primarily utilized in organic synthesis as an intermediate for the production of various chemical compounds. Its tert-butoxy group makes it a valuable building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs). The compound is also employed in the preparation of specialty chemicals, including agrochemicals and dyes, where its benzoic acid moiety contributes to the structural framework of the final product. Additionally, it finds use in research and development for creating novel materials and polymers, leveraging its reactivity and stability in chemical reactions.