Used as a key intermediate in the synthesis of various organic compounds, particularly in the production of agrochemicals and pharmaceuticals. Its reactive anhydride group enables it to form bonds with amines and alcohols, making it valuable in creating polymers, resins, and coatings with enhanced properties. Additionally, it serves as a building block in the development of specialty chemicals, including dyes and pigments. Its chlorinated structure also contributes to its utility in the synthesis of compounds with specific biological activities, such as herbicides and fungicides.