Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of biologically active compounds targeting central nervous system disorders. Its cyano and ester functional groups allow for further chemical transformations, enabling the construction of complex cyclic structures. Commonly employed in medicinal chemistry for building constrained ring systems that enhance metabolic stability and receptor selectivity. Also utilized in the preparation of specialty organic compounds where ring strain and electronic properties of the cyclobutane core contribute to unique reactivity patterns.