Used as an intermediate in the synthesis of azo dyes and pigments, particularly for producing bright red and orange shades valued in textiles and printing inks. Employed in the preparation of fluorescent dyes due to its naphthalene backbone, enhancing sensitivity in certain analytical detection methods. Also serves as a building block in organic synthesis for pharmaceuticals and agrochemicals where aromatic amine and carboxylic acid functionalities are required. Its structure supports complexation with metals, making it useful in metal ion sensors and catalysis.