Hydroquinidine 9-phenanthryl ether is primarily used in asymmetric synthesis and catalysis, particularly in enantioselective reactions. It serves as a chiral ligand or catalyst in organic transformations, enabling the production of enantiomerically pure compounds. This is especially valuable in pharmaceutical synthesis, where the specific chirality of a molecule can significantly impact its biological activity and safety. Additionally, it finds application in the development of advanced materials and fine chemicals, where precise stereochemical control is essential. Its role in enhancing selectivity and efficiency in chemical processes makes it a critical tool in modern synthetic chemistry.