Used as a key intermediate in organic synthesis, particularly in the preparation of complex aromatic compounds and pharmaceuticals. Its dual sulfonate ester functionality allows for selective substitution reactions, enabling stepwise introduction of different groups onto the aromatic ring. The iodo group serves as a handle for cross-coupling reactions such as Suzuki or Heck couplings, making it valuable in the synthesis of biaryl structures commonly found in bioactive molecules. Commonly employed in research settings for the development of functionalized phenyl derivatives with potential applications in medicinal chemistry and materials science.