Used as an intermediate in organic synthesis, particularly in Claisen condensation reactions for the preparation of β-keto esters and related compounds. The tert-butyl ester group functions as a protecting moiety, enabling selective reactivity and control in multi-step syntheses by preventing unwanted side reactions. It serves as a versatile building block in pharmaceuticals, agrochemicals, and bioactive molecules due to its participation in condensation, cyclization, esterification, and decarboxylation pathways. Commonly employed in the synthesis of heterocyclic systems, such as pyrazoles and isoxazoles, which are essential motifs in drug candidates. Additionally, it finds application in the development of flavor and fragrance compounds leveraging its reactivity.