This chemical is widely used as a key reagent in enzymatic assays, particularly in the detection of hydrogen peroxide. It serves as a chromogenic substrate in combination with horseradish peroxidase (HRP) to produce a measurable color change, enabling the quantification of various biomolecules like glucose, cholesterol, and uric acid in clinical and biochemical research. Its stability and sensitivity make it a preferred choice in diagnostic kits and laboratory experiments. Additionally, it is employed in water treatment processes to aid in the removal of organic pollutants due to its sulfonate group's reactivity. Its applications extend to industrial settings, where it is used as an intermediate in the synthesis of dyes and other organic compounds.