Ethyl 2,4-dichloroquinazoline-6-carboxylate is primarily used in the field of organic synthesis and pharmaceutical research. It serves as a key intermediate in the development of various biologically active compounds, particularly in the synthesis of quinazoline derivatives. These derivatives are often explored for their potential therapeutic properties, including anticancer, antimicrobial, and anti-inflammatory activities. Researchers utilize this compound to modify and optimize the structure of drug candidates, enhancing their efficacy and selectivity. Additionally, it is employed in the study of enzyme inhibition mechanisms, contributing to the discovery of novel treatments for diseases. Its role in chemical reactions, such as nucleophilic substitution, makes it valuable for constructing complex molecular frameworks in medicinal chemistry.