Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and bioactive molecules. This compound features a tert-butyl ester and a Weinreb amide (N-methoxy-N-methylamide) functionality, enabling selective ketone formation through reaction with organometallic reagents while the ester protects the carboxylic acid group. The deprotectable ester allows for subsequent functionalization, such as amide bond formation in peptide synthesis or attachment to molecular scaffolds. Commonly employed in medicinal chemistry to build complex nitrogen-containing compounds, modify scaffolds to enhance solubility or metabolic stability, and develop protease inhibitors and other enzyme-targeted agents by mimicking natural substrates.