Used as an intermediate in the synthesis of dyes and pigments, particularly in the production of azo dyes for textiles and inks. It also serves in the development of photochromic materials and optical brighteners due to its ability to undergo structural changes under light exposure. Additionally, it finds use in the preparation of pharmaceuticals and agrochemicals where aromatic amine functionality is required for biological activity. Its derivatives are explored in materials science for organic semiconductors and fluorescent probes.