Used as an intermediate in the synthesis of dyes and pigments, particularly in the production of azo dyes where its nitro and carboxylic acid groups facilitate coupling reactions. It also serves in the development of pharmaceuticals, acting as a building block for anti-inflammatory and antimicrobial agents. Its hydroxyl and chloro functionalities allow for easy modification in organic synthesis, making it valuable in creating complex aromatic compounds. Additionally, it finds use in research laboratories for studying substitution effects on aromatic ring reactivity.