Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) with biological activity. Its aldehyde functional group allows for easy modification, enabling the formation of imines, oximes, or other derivatives useful in drug discovery. Commonly employed in agrochemical research for creating novel pesticides and herbicides due to the pyrazole ring’s favorable metabolic stability and binding properties. Also utilized in the preparation of functional materials and ligands for catalysis. Its versatility in cross-coupling reactions and heterocyclic elaboration makes it valuable in medicinal chemistry and combinatorial synthesis.