1,4-Dihydronaphthalene is primarily used as an intermediate in the synthesis of more complex organic compounds. It plays a significant role in the production of pharmaceuticals, where it serves as a building block for creating various active pharmaceutical ingredients (APIs). Additionally, it is utilized in the development of agrochemicals, contributing to the formulation of pesticides and herbicides. In material science, this compound is employed in the creation of specialty chemicals and polymers, enhancing properties such as durability and flexibility. Its application extends to research and development, where it is used in organic synthesis to study reaction mechanisms and develop new chemical processes.