Used as an intermediate in the synthesis of sulfa drugs, particularly in the production of antimicrobial agents. It plays a key role in the development of sulfonamide-based pharmaceuticals due to its reactivity and ability to form active sulfonamide bonds. Commonly employed in organic synthesis for constructing biologically active molecules, especially in medicinal chemistry research. Its nitro and chloro functional groups allow for further chemical modifications, making it valuable in creating diverse compound libraries for drug discovery.