Used in organic synthesis as an intermediate for pharmaceuticals and functional materials. Serves as a building block in the preparation of indole-based compounds with biological activity, including potential antitumor and antimicrobial agents. Employed in the development of fluorescent probes due to its conjugated structure, enabling applications in bioimaging and sensor technologies. Also utilized in the synthesis of novel heterocyclic systems for materials science, such as organic semiconductors and optoelectronic devices.