Used as a chiral building block in the synthesis of pharmaceuticals and fine chemicals. Its hydroxyl and ester functional groups allow for selective transformations, making it valuable in asymmetric synthesis. Commonly employed in the preparation of beta-hydroxy esters and as an intermediate in the production of active pharmaceutical ingredients (APIs), especially those requiring stereochemical control. The tert-butyl ester group offers stability under various reaction conditions and can be easily deprotected when needed. Also utilized in the development of agrochemicals and specialty polymers where specific stereochemistry is required.