Used in organic synthesis as an intermediate for pharmaceuticals and fine chemicals. The iodo group allows for cross-coupling reactions, such as Suzuki or Heck reactions, enabling the construction of complex aromatic systems. Commonly employed in the development of fluorescent probes and dyes due to the naphthalene backbone’s photophysical properties. Also utilized in the research of liquid crystals and organic semiconductors where halogenated aromatic compounds enhance electronic properties. Its carboxylic acid functionality permits esterification or amidation, facilitating conjugation to other molecules for biological or material science applications.