Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of central nervous system agents. Its trifluoromethyl group enhances metabolic stability and lipophilicity, making it valuable in drug design for improving bioavailability and binding affinity. Commonly employed in the preparation of serotonin and norepinephrine reuptake inhibitors, where the (R)-enantiomer shows higher biological activity. Also utilized in agrochemicals for creating bioactive molecules with improved environmental stability.