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 quinazoline core, which is known to interact with biological targets involved in cell signaling pathways. Its chloro and methyl substituents allow for selective functionalization, enabling the creation of derivatives with improved potency and selectivity. Also explored in agrochemical research for designing novel pesticides with targeted activity.