Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and other biologically active compounds. Its aldehyde functionality allows for easy derivatization, enabling the formation of imines, aldimines, or extension via Wittig and other carbon-chain elongation reactions. Commonly employed in medicinal chemistry for scaffold modification in drug discovery programs, especially in the construction of heterocyclic systems. Also utilized in agrochemical research for building functionalized pyrazole derivatives with potential bioactivity.