Widely used as an intermediate in the synthesis of pharmaceuticals, particularly in the production of analgesic and antipyretic drugs. It serves as a key reagent in colorimetric assays for the detection of peroxides and peroxidase activity due to its ability to form colored complexes in enzymatic reactions. Commonly employed in clinical diagnostics and biochemical research for monitoring oxidative stress markers. Also utilized in the development of dye-sensitized sensors and as a stabilizer in certain industrial formulations.