(R)-2-Benzyl-4-(tert-butoxy)-4-oxobutanoic acid is primarily utilized in organic synthesis as a chiral building block. Its structure, featuring a benzyl group and a tert-butoxy moiety, makes it valuable for constructing complex molecules with high stereochemical control. It is often employed in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where enantiomeric purity is critical. Additionally, it serves as an intermediate in the preparation of peptides and other biologically active compounds, leveraging its carboxylic acid functionality for further chemical modifications. Its tert-butoxy group also provides stability during synthetic processes, making it a preferred choice in multi-step organic reactions.