Used as a key intermediate in the synthesis of pharmaceuticals, 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 complex heterocyclic structures. Its aldehyde group allows for easy functionalization via condensation or reduction reactions, enabling the creation of diverse compound libraries for drug discovery. Also employed in the preparation of fluorescent probes and agrochemicals owing to its stable aromatic framework and reactive site.