Used primarily as a key intermediate in the synthesis of agrochemicals and pharmaceuticals, particularly in the development of herbicides and fungicides. Its reactive sulfonyl chloride group enables easy derivatization to form sulfonamides, which are common structural motifs in bioactive molecules. It is also employed in the preparation of sulfonate esters for use in crop protection agents. Due to the presence of multiple halogens, it serves as a versatile building block in cross-coupling reactions, facilitating the construction of complex aromatic systems in medicinal chemistry and materials science.