Used as a key building block in pharmaceutical synthesis, particularly in the development of biologically active compounds. Its rigid cyclobutane structure and fluorine substitutions enhance metabolic stability and binding affinity in drug candidates. Commonly employed in the preparation of protease inhibitors and other therapeutic agents where fluorination improves pharmacokinetic properties. Also utilized in agrochemicals for creating structurally constrained intermediates that increase selectivity and efficacy. The carboxylic acid group allows for easy derivatization, enabling peptide coupling and ester formation in multi-step syntheses.