Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in medicinal chemistry due to its fused heterocyclic structure, which can mimic purine bases in nucleic acids, enabling interactions with biological targets such as enzymes and receptors. Its derivatives are explored for anti-inflammatory, antiviral, and antiproliferative activities. Commonly employed in research settings for structure-activity relationship (SAR) studies to optimize drug candidates.