Used in the synthesis of biologically active compounds, particularly in pharmaceutical research for developing kinase inhibitors and antimicrobial agents. Its structure serves as a scaffold in medicinal chemistry due to its resemblance to purine bases, enabling interactions with enzymes and receptors in the body. Also employed in the development of fluorescent probes and optoelectronic materials owing to its conjugated aromatic system. Commonly modified to enhance binding affinity and selectivity in drug design.