Used as a key intermediate in the synthesis of phosphodiesterase (PDE) inhibitors, particularly PDE5 inhibitors which are relevant in the treatment of erectile dysfunction and pulmonary arterial hypertension. It serves as a building block in medicinal chemistry for developing bioactive molecules due to its nitrogen-rich heterocyclic structure. Its derivatives are explored for their potential in CNS disorders and anticancer agents owing to their ability to interact with various enzyme systems and receptors. Commonly employed in research settings for structure-activity relationship (SAR) formatted studies of pyrazolopyrimidine-based drugs.