Used as an intermediate in the synthesis of dyes and pigments, particularly in the production of naphthol-based azo dyes. It plays a role in the development of organic semiconductors due to its electron-withdrawing properties when incorporated into larger conjugated systems. Also utilized in the preparation of fluorescent brightening agents for textiles and paper. Its reactivity allows for substitution reactions in pharmaceutical research, especially in the construction of nitrogen-containing heterocycles. Limited use in agrochemicals as a building block for certain plant growth regulators.