Used primarily in pharmaceutical research, this compound serves as a key intermediate in the synthesis of various biologically active molecules. It is particularly valuable in the development of drugs targeting specific enzymes or receptors due to its quinazoline core, which is a common structural motif in medicinal chemistry. Researchers utilize it to create potential treatments for conditions like cancer, inflammation, and microbial infections. Its chlorine and amino functional groups allow for further chemical modifications, enabling the design of diverse therapeutic agents. Additionally, it is employed in the study of structure-activity relationships to optimize drug efficacy and selectivity.