Used as an intermediate in the synthesis of dyes and pigments, particularly in the production of azo dyes. It plays a role in the development of certain pharmaceuticals and agrochemicals due to its reactive functional groups, including chloro, nitro, and carboxylic acid. Commonly employed in organic research for constructing more complex aromatic compounds. Its chloro, nitro, and carboxylic acid groups allow for further chemical modifications, making it valuable in multi-step synthesis.