(S)-(+)-5-Oxo-2-tetrahydrofurancarboxylic acid may be used as a ligand to form water-soluble silver(I) complexes by reacting with silver oxide. These complexes show good antibacterial and antifungal activities.It may also be used a chiral resolving agent during the multi-step synthesis of phosphatidylinositol 3,5-bisphosphate [PtdIns(3,5)P2].