Used primarily as an intermediate in the synthesis of pharmaceuticals and agrochemicals. Its reactive chloromethyl group allows for easy functionalization, making it valuable in constructing complex molecules. Commonly employed in the preparation of pyrazine-based drug candidates, including those with antimicrobial, antiviral, and antitumor activities. Also utilized in the development of crop protection agents due to its ability to serve as a building block in active ingredient synthesis. Its versatility in cross-coupling reactions and nucleophilic substitutions enhances its utility in medicinal and agricultural chemistry.