Used as an intermediate in the synthesis of azo dyes and pigments, particularly for producing yellow and orange shades in textile and printing inks. Also employed in the development of certain sulfa drugs in pharmaceutical applications, where it acts as a key building block for antimicrobial agents. Its structure allows for easy modification in dye chemistry, enhancing color fastness and solubility. Additionally, it finds use in analytical chemistry as a reagent for detecting specific metal ions due to its chelating properties.