Used in the synthesis of dyes and pharmaceuticals, particularly in the development of azo dyes due to its aromatic amine group that participates in diazotization reactions. It also serves as an intermediate in the production of local anesthetics and other bioactive compounds. Its derivatization is common in analytical chemistry for modifying compounds to enhance detectability in chromatographic methods. Additionally, it finds use in research settings for preparing fluorescent probes and sensors owing to its ability to form conjugated systems.