2-Chloro-6-ethoxyquinazoline is primarily utilized in the field of medicinal chemistry as a key intermediate in the synthesis of various biologically active compounds. Its structure serves as a building block for the development of quinazoline derivatives, which are known for their potential therapeutic applications. This compound is particularly significant in the creation of kinase inhibitors, which are used in targeted cancer therapies to inhibit specific enzymes involved in tumor growth and progression. Additionally, it plays a role in the design of compounds with anti-inflammatory, antimicrobial, and antiviral properties, making it valuable in drug discovery and pharmaceutical research. Its versatility in chemical reactions allows for modifications that enhance the efficacy and selectivity of potential drug candidates.