Used in environmental studies as a marker for polycyclic aromatic hydrocarbon (PAH) contamination, helping to track pollution sources and assess environmental impact. It serves as a reference standard in analytical chemistry for identifying and quantifying PAHs in complex mixtures. In research, it is utilized to study the metabolic pathways and toxicity of PAHs, contributing to understanding their effects on human health. Additionally, it is employed in the development of fluorescence-based sensors and probes due to its photophysical properties.