Used as a key chiral building block in the synthesis of active pharmaceutical ingredients, particularly in the development of neuroactive drugs and antidepressants. Its strained cyclopropane ring and fluorine substituent enhance metabolic stability and binding selectivity in central nervous system agents. Commonly employed in asymmetric synthesis to introduce amine functionality with high stereocontrol. Also utilized in the preparation of enzyme inhibitors where fluorination improves bioavailability and target affinity.