Used primarily as an intermediate in the synthesis of various pharmaceutical compounds, this chemical plays a crucial role in the production of active pharmaceutical ingredients (APIs). It is also employed in the development of dyes and pigments, where its reactive sulfonyl chloride group facilitates the formation of complex colorants. Additionally, it serves as a key building block in organic synthesis, particularly in the creation of sulfonamide derivatives, which are widely used in medicinal chemistry for their antibacterial and diuretic properties. Its versatility in chemical reactions makes it valuable in research and industrial applications.