Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and agrochemicals. It serves as a building block for constructing complex molecules due to the reactivity of the bromo group, which can undergo cross-coupling reactions such as Suzuki or Heck reactions. The carboxylic acid functionality allows for further derivatization, including esterification or amide formation, making it valuable in the development of functional materials and bioactive compounds. Also employed in the synthesis of dyes and fluorescent probes owing to the naphthalene backbone’s inherent photophysical properties.