Used as an intermediate in the synthesis of sulfa drugs and other biologically active compounds. Its reactive chloro and methanesulfonyl groups allow for selective substitutions, making it valuable in pharmaceutical research. Commonly employed in the preparation of sulfonamide-based antimicrobial agents. Also utilized in agrochemical synthesis for developing herbicides and plant growth regulators. Its nitro group facilitates further functionalization through reduction to amino derivatives, enabling diverse chemical transformations in organic synthesis.