Used as an 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 ability to interact with biological targets through π-π stacking and hydrophobic interactions. Also employed in research settings to design novel quinazoline-based derivatives with potential antitumor and anti-inflammatory activities. Its structural framework is valuable in optimizing drug candidates for improved binding affinity and metabolic stability.