Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and other bioactive molecules. Its structure allows for selective functionalization, making it valuable in medicinal chemistry for constructing heterocyclic compounds. Commonly employed in cross-coupling reactions such as Suzuki and Heck reactions to build complex molecules for drug discovery. Also utilized in the preparation of agrochemicals and organic materials where brominated pyrazine derivatives enhance electronic or biological properties.