Used in the synthesis of selenium-containing fluorescent probes for biological imaging due to its electron-rich structure and ability to form stable conjugates with biomolecules. Its derivatives are employed in the development of organic semiconductors and optoelectronic materials, particularly in selenium-based dyes for near-infrared emission. Also investigated as a building block in medicinal chemistry for designing compounds with antioxidant and neuroprotective properties. Shows potential in coordination chemistry as a ligand for metal complexes with catalytic activity.