Used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. It serves as a protecting group for phenols due to the stability of the tert-butyl ether linkage under various reaction conditions. This stability allows selective reactions to be carried out at other functional sites in a molecule. It is also employed in the synthesis of fragrances and antioxidants, where its aromatic and bulky structure contributes to desired chemical properties. Its volatility and inertness make it suitable as a solvent or additive in specialized reactions.