Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in medicinal chemistry due to its ability to form complexes with metal ions and participate in hydrogen bonding, enhancing its binding affinity to biological targets. Also employed in the preparation of fluorescent probes for detecting metal ions in environmental and biological systems. Its conjugated structure makes it suitable for applications in optoelectronic materials and organic semiconductors.