Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules and drug candidates. Its strained cyclobutane ring and functional groups make it valuable for constructing complex organic structures with specific stereochemistry. Commonly employed in medicinal chemistry for creating analogs of natural products and designing enzyme inhibitors. Also utilized in the preparation of peptidomimetics due to its ability to mimic amino acid building blocks, enhancing metabolic stability and bioavailability in drug design.