Used as an intermediate in the synthesis of functional dyes, particularly in the production of hair colorants due to its ability to form stable, long-lasting pigments upon oxidation. It contributes to color development in oxidative hair dye formulations by reacting with couplers to generate a range of shades, especially in permanent and semi-permanent dyes. Its methoxyphenyl group enhances electron donation, improving color intensity and hue. Also explored in the development of photochromic materials and organic electronic components due to its conjugated structure and redox properties.