Used as a key intermediate in the synthesis of phosphodiesterase inhibitors, particularly in the development of vasodilatory and anti-inflammatory drugs. It plays a role in the production of compounds that modulate cellular signaling pathways involving cyclic nucleotides. Its structure allows for selective binding and inhibition of specific PDE enzyme isoforms, making it valuable in research and development of treatments for cardiovascular diseases and erectile dysfunction. Also utilized in the preparation of kinase inhibitors for potential use in cancer therapy. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its ability to serve as a scaffold for functional modifications.