Introduction With the rapid expansion of industrial activities and increasing global awareness of environmental and occupational health, polycyclic aromatic hydrocarbons (PAHs) have become a major focus of scientific and regulatory attention. 1-Hydroxypyrene （ CAS:5315-79-7 ） , a primary metabolite of pyrene, is internationally recognized as a reliable indicator of PAH exposure. In modern industrial systems, 1-Hydroxypyrene plays a crucial role in environmental monitoring, analytical testing, and applied industrial research. As industries seek more accurate tools to evaluate environmental impact and human health risks, the importance of 1-Hydroxypyrene continues to grow. Chemical Properties and Industrial Significance of 1-Hydroxypyrene 1-Hydroxypyrene has the molecular formula C₁₆H₁₀O and represents a hydroxylated derivative of pyrene. The introduction of a hydroxyl group at the 1-position enhances both its chemical reactivity and analytical detectability. From an industri...