Used primarily as an intermediate in the synthesis of pharmaceuticals and agrochemicals. Its reactive sulfonyl chloride group allows for easy attachment to other molecules, making it valuable in building complex organic compounds. Commonly employed in the development of herbicides and fungicides due to the stability and bioactivity imparted by the dichlorothiophene scaffold. Also utilized in medicinal chemistry for constructing sulfonamide-based drug candidates, which are known for their antimicrobial and enzyme-inhibiting properties.