Used as a key intermediate in the synthesis of various pharmaceuticals, particularly in the development of antihypertensive and antiarrhythmic drugs. It serves as a building block for quinazoline-based compounds that exhibit significant biological activity, including kinase inhibition. Its structure allows for easy modification, making it valuable in medicinal chemistry for drug design and optimization. Also employed in research settings to develop new bioactive molecules with potential anticancer, antimicrobial, or anti-inflammatory properties.