Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antihypertensive drugs and other biologically active compounds. Its functional groups allow for easy modification in multi-step organic syntheses, making it valuable in medicinal chemistry. Commonly employed in the preparation of pyrazine-based derivatives that exhibit potential antimicrobial and antiviral properties. Also utilized in agrochemical research for developing novel pesticides due to its reactive chlorine and hydroxyl sites, which facilitate coupling reactions and structural diversification.