Used as a highly selective chromogenic chemosensor for detecting metal ions, particularly mercury (Hg²⁺) and copper (Cu²⁺), in environmental and biological samples. The compound undergoes a distinct color change upon binding with these metals, enabling visual or spectrophotometric detection without the need for complex instrumentation. Its brominated phenolic structure enhances sensitivity and selectivity due to strong electron-withdrawing effects and favorable coordination geometry. Also employed in studies related to oxidative stress and catalysis, where it mimics peroxidase-like activity in aqueous systems. Due to its stability and sharp optical response, it is integrated into sensor platforms for monitoring heavy metal contamination in water and industrial effluents.