Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antiviral and antibacterial agents. Its structure allows for easy functionalization, making it valuable in creating active ingredients in crop protection chemicals and agrochemicals. Also employed in the preparation of fluorinated heterocyclic compounds which exhibit enhanced metabolic stability and bioavailability. Commonly utilized in research settings for building blocks in medicinal chemistry due to the reactivity of the chlorine and electron-deficient pyrazine ring.