Used as an intermediate in organic synthesis, particularly in the preparation of advanced aromatic compounds and functionalized naphthalene derivatives. It serves as a building block in the development of liquid crystals, organic semiconductors, and pharmaceuticals due to its ability to undergo cross-coupling reactions such as Suzuki or Heck reactions. The bromine atom allows for selective metal-catalyzed substitutions, enabling the introduction of various functional groups. Its ethyl-substituted naphthalene core contributes to enhanced lipophilicity and stability in conjugated systems, making it valuable in materials science research, especially in designing OLEDs and organic photovoltaics.