Used as a key intermediate in the synthesis of hair dye formulations, particularly oxidative colorants. It contributes to the development of brown and black shades due to its ability to form complex chromophores when coupled with other dye components. Also employed in the production of azo dyes and pigments for textiles and inks. Its amino and hydroxyl functional groups allow for easy modification in organic synthesis, making it valuable in pharmaceutical and agrochemical research for building more complex molecules.