Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antihypertensive drugs and vasodilators. It serves as a building block for active pharmaceutical ingredients due to its reactive amino and chloro functional groups, which allow for further chemical modifications. Commonly employed in the preparation of pyrazine-based drug candidates with potential cardiovascular and central nervous system activity. Also utilized in research settings for the design of novel bioactive molecules and in medicinal chemistry for structure-activity relationship studies.