Used primarily in the synthesis of dyes and pigments, particularly for coloring textiles and plastics. It serves as a key intermediate in the production of heterocyclic compounds, which are essential in various industrial applications. Additionally, it is employed in analytical chemistry as a reagent for detecting and quantifying specific substances, such as metal ions, due to its ability to form stable complexes. In the field of organic synthesis, it is utilized to create complex molecules for pharmaceuticals and agrochemicals. Its role in polymer chemistry includes acting as a monomer or cross-linking agent to enhance material properties.