This compound is primarily utilized in organic synthesis as a versatile intermediate for the construction of complex molecules. Its structure, featuring a tosyl group and a dihydroisoquinolinone core, makes it valuable in the development of pharmaceuticals, particularly in the synthesis of biologically active compounds. It is often employed in the preparation of heterocyclic compounds, which are crucial in drug discovery for their potential therapeutic properties. Additionally, it serves as a key building block in the synthesis of natural product analogs and other fine chemicals. Its reactivity allows for further functionalization, enabling the creation of diverse chemical libraries for screening and research purposes.