Used in the synthesis of dyes and pigments, particularly azo dyes, due to its ability to act as a coupling component in diazotization reactions. It serves as an intermediate in the production of textile dyes, ink dyes, and biological stains. Also employed in the development of certain pharmaceuticals and fine chemicals where naphthalene-based structures are required. Its reactivity as an amino-hydroxy aromatic compound makes it valuable in organic synthesis for building complex molecular frameworks.