Used primarily as an intermediate in the synthesis of agrochemicals and pharmaceuticals. It serves as a building block in the production of herbicides and plant growth regulators due to its reactive chlorine atoms that readily undergo substitution reactions. Also employed in the development of functionalized pyrazine derivatives for use in medicinal chemistry, particularly in compounds targeting neurological and inflammatory pathways. Its aromatic structure and electron-deficient nature make it suitable for cross-coupling reactions in advanced organic synthesis. Additionally, it finds use in the preparation of dyes and fluorescent probes for biochemical labeling.