Used primarily as an intermediate in organic synthesis, it plays a crucial role in the production of various pharmaceuticals and agrochemicals. Its reactive sulfonyl chloride group enables it to form sulfonamides, which are key components in many drugs, including antibiotics and anti-inflammatory medications. Additionally, it is utilized in the development of dyes and pigments due to its ability to introduce sulfonyl groups into aromatic systems. Its dichloropyridine moiety also contributes to the creation of compounds with potential biological activity, making it valuable in medicinal chemistry research.