Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of herbicides and fungicides. Its reactive chlorine and electron-withdrawing nitro group allow for selective nucleophilic substitution, enabling the introduction of various functional groups in heterocyclic compounds. Commonly employed in the preparation of dyes and fluorescent probes due to its ability to form stable conjugated systems. Also utilized in research for developing new pyrazine-based bioactive molecules with potential antimicrobial and anticancer properties.