Used primarily in research as an intermediate in the synthesis of fluorescent dyes and polycyclic aromatic compounds. It serves in the development of organic semiconductors and optoelectronic materials due to its conjugated structure. Also employed in environmental studies to understand the behavior and degradation of aminopolycyclic aromatic hydrocarbons. Its fluorescence properties make it useful in spectroscopic analysis and sensor design. Not used in consumer products due to toxicity concerns.