Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceutical compounds. It serves as a building block in the development of antihistamines and anticholinergic agents due to the presence of the benzhydryl moiety, which is common in central nervous system-active drugs. The carboxylic acid group allows for further functionalization, enabling peptide coupling or esterification to modify drug solubility and bioavailability. Also employed in the synthesis of prodrugs where controlled release is achieved through ester derivatives. Its structure supports research in medicinal chemistry for designing molecules with improved metabolic stability and receptor selectivity.