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3,5-dibromo-2-hydroxybenzonitrile; CAS No.: 40718-08-9;3,5-dibromo-2-hydroxybenzonitrile. PROPERTIES: 3,5-dibromo-2-hydroxybenzonitrile is a brominated and hydroxylated aromatic nitrile with molecular formula C7H4Br2NO. It typically exists as a white to off-white crystalline powder with a melting point of approximately 120-125 C. The compound has limited water solubility but dissolves in basic aqueous solutions. It exhibits moderate thermal stability but may decompose when exposed to high temperatures or strong acids, releasing toxic bromine vapors. Proper storage involves keeping it in tightly sealed containers below 25 C, protected from moisture and heat. APPLICATIONS: In pharmaceutical research, this compound serves as a lead structure for developing antimicrobial and anticancer agents. The bromo and hydroxy substitution provides structural diversity that enhances binding to biological targets, while the nitrile group forms the pharmacophore essential for activity (European Journal of Medicinal Chemistry). In materials science, 3,5-dibromo-2-hydroxybenzonitrile contributes to the creation of functional organic materials with tailored electronic properties. Its brominated aromatic core and nitrile group influence the electronic characteristics of derived materials, useful in optoelectronic applications such as organic light-emitting diodes (Journal of Materials Chemistry C). The hydroxyl group enables further functionalization through esterification or etherification, expanding its utility in multistep syntheses (The Journal of Organic Chemistry).