Used as an intermediate in the synthesis of pharmaceuticals and fine chemicals, particularly in the preparation of sulfonamide derivatives. Its reactive chlorosulfonyl group allows for efficient sulfonylation reactions, making it valuable in the development of active pharmaceutical ingredients (APIs). Commonly employed in organic synthesis where acyl protection is needed, as the pivalate group offers steric stability and controlled reactivity. Also utilized in the production of agrochemicals and specialty polymers due to its ability to introduce sulfonyl functionalities under mild conditions.