Used as an intermediate in organic synthesis, particularly in the preparation of bioactive molecules and pharmaceuticals. Its carboxylic acid and tert-butyl ester functional groups allow for easy modification and coupling reactions, making it valuable in constructing complex organic structures. The tert-butyl group acts as a protecting group that can be selectively removed under mild acidic conditions without affecting other sensitive functionalities. Commonly employed in the development of prodrugs and functionalized polymers due to its balanced hydrophobicity and reactivity. Also utilized in peptide chemistry as a linker or spacer to introduce aliphatic chains with terminal activation sites.