Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antihypertensive drugs and other bioactive molecules. Its structure allows for easy functionalization, making it valuable in medicinal chemistry for building complex heterocyclic compounds. Commonly employed in coupling reactions and nucleophilic substitutions to introduce pyrazine moieties into drug candidates. Also utilized in agrochemical research for designing novel pesticides and herbicides due to its reactivity and stability in various reaction conditions.