Used in organic synthesis as an intermediate for pharmaceuticals and agrochemicals. Its aldehyde functional group allows for condensation and nucleophilic addition reactions, making it valuable in constructing heterocyclic compounds. Commonly employed in the development of fluorescent dyes and optical brighteners due to its rigid aromatic structure. Also serves as a building block in the synthesis of bioactive molecules, including antiviral and anti-inflammatory agents. Its derivatives are explored in materials science for designing sensors and organic semiconductors.