What are the main uses of 4-Amino-3-Nitrophenol (CAS: 610-81-1)?

4-Amino-3-Nitrophenol is widely used in pharmaceuticals as a precursor for sulfonamide antibiotics and dye intermediates. It also finds applications in industrial chemistry for producing azo compounds and in research for synthesizing other organic molecules. Additionally, it is utilized in the manufacturing of certain food additives and as a component in chemical analysis due to its reactivity and structural features.