4-Chloroquinazoline is widely utilized in the pharmaceutical industry as a key intermediate in the synthesis of various biologically active compounds. Its quinazoline core structure is particularly valuable in the development of anticancer agents, as it can inhibit tyrosine kinases, which are enzymes involved in cancer cell growth and proliferation. Additionally, it serves as a building block for creating drugs targeting other diseases, such as hypertension and inflammation, due to its ability to modulate specific biochemical pathways. In medicinal chemistry, 4-Chloroquinazoline is often modified to enhance its pharmacological properties, making it a versatile scaffold for drug discovery. Beyond pharmaceuticals, it is also employed in agrochemical research to develop new pesticides and herbicides, leveraging its potential to disrupt metabolic processes in pests and weeds.