Used as a chiral building block in organic synthesis, particularly in the preparation of enantiomerically enriched sulfur-containing compounds. Its acetylated thiol group allows for controlled release of the thiol functionality under mild deprotection conditions, making it valuable in multi-step synthesis of pharmaceuticals and bioactive molecules. The alkyne moiety enables further structural elaboration via click chemistry or metal-catalyzed coupling reactions. Commonly employed in the development of asymmetric synthesis routes where stereochemical control is critical.