8-Hydroxyquinoline

8-Hydroxyquinoline (CAS No.: 148-24-3) is a heterocyclic phenolic compound derived from quinoline that is widely utilized in biochemical and pharmacological research as a lipophilic metal-chelating agent with notable antimicrobial and antifungal properties. Its ability to coordinate transition metal ions, particularly copper, underlies its utility in studying metal homeostasis, redox biology, and metal-dependent cellular processes, including the modulation of intracellular metal transport and oxidative stress pathways. In vitro studies demonstrate that 8-hydroxyquinoline exhibits antimicrobial activity in the low micromolar range against certain bacterial strains, supporting its use as a reference compound in antimicrobial screening and mechanistic investigations. Additionally, its capacity to induce genotoxic and cytotoxic responses, such as increased formation of micronucleated erythrocytes in experimental models, provides a useful tool for evaluating cellular stress responses and genomic stability. Beyond biological assays, it is also employed as a stabilizer in hydrogen peroxide systems, reflecting its chemical reactivity and metal-binding properties. In research settings, 8-hydroxyquinoline is commonly applied in cell-based assays and animal models to explore metal ion dynamics, antimicrobial mechanisms, and oxidative damage, with experimental concentrations or dosing regimens tailored to specific study designs and objectives.