Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in the preparation of active pharmaceutical ingredients (APIs) due to its reactive aldehyde group, which allows for further functionalization. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies, especially in optimizing pyrazole-based drug candidates. Also utilized in the production of agrochemicals and dyes where aromatic heterocyclic aldehydes are required.