Used in organic synthesis as an intermediate for pharmaceuticals and functional materials. Its bromine functionality allows for cross-coupling reactions, such as Suzuki or Heck reactions, enabling the construction of complex aromatic and heteroaromatic systems. Commonly employed in the development of conjugated materials for optoelectronics, including organic semiconductors and luminescent compounds. Also explored in medicinal chemistry for designing bioactive molecules due to the pyrazine core’s presence in some pharmacologically active compounds.