(R)-4-(tert-Butoxy)-2-ethyl-4-oxobutanoic acid is primarily utilized in the synthesis of chiral intermediates for pharmaceuticals. Its structure makes it valuable in the production of enantiomerically pure compounds, which are crucial for developing drugs with specific biological activities. The compound is often employed in asymmetric synthesis, where it acts as a building block for creating complex molecules with high stereochemical precision. Additionally, it finds application in the preparation of fine chemicals and agrochemicals, contributing to the development of products with enhanced efficacy and reduced side effects. Its role in organic synthesis underscores its importance in advancing medicinal chemistry and related fields.