Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the preparation of dyes and certain herbicides. It serves as a building block in organic reactions due to its reactive functional groups, including the two chloro substituents at positions 2 and 6, the nitro group at position 4, and the carboxylic acid. These enable nucleophilic aromatic substitution, nitro reduction, and other modifications to form more complex aromatic compounds. Its nitro, chloro, and carboxylic acid groups allow for further chemical modifications, making it valuable in research and development of specialty chemicals.