6-Bromo-1-chloronaphthalene is primarily used as an intermediate in organic synthesis, particularly in the production of more complex chemical compounds. It plays a significant role in the development of pharmaceuticals, where it serves as a building block for active pharmaceutical ingredients (APIs). Additionally, it is utilized in the synthesis of dyes and pigments, contributing to the creation of vibrant and stable colors for industrial applications. Its unique structure also makes it valuable in research and development for studying chemical reactions and developing new materials.