Used primarily as an intermediate in organic synthesis, especially in the production of carbamates and urethanes. It reacts with amines to form carbamate esters, which are key in manufacturing pesticides, pharmaceuticals, and agrochemicals. Also employed in the preparation of specialty polymers and as a derivatizing agent in analytical chemistry for modifying acidic functional groups. Its reactivity makes it valuable in controlled esterification and protection/deprotection strategies in multi-step synthesis.