Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and antimicrobial agents. Its structure allows for selective functionalization, making it valuable in medicinal chemistry for building complex heterocyclic systems. Commonly employed in cross-coupling reactions and nucleophilic substitutions to introduce pyrazine-based scaffolds into bioactive molecules. Also utilized in research settings for the preparation of fluorescent probes and agrochemicals due to its electron-deficient aromatic core and modifiable chlorine and ether functionalities.