This compound, (OC-6-22)-bis(acetato-κO,κO')[(1R)-[1,1'-binaphthalene]-2,2'-diylbis[diphenylphosphine-κP]]-Ruthenium, is a well-defined ruthenium(II) complex coordinated with a chiral (R)-BINAP (2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl) ligand and two acetate groups. It is a commercially available, air-stable, and moisture-stable precatalyst. Its primary and most significant application is in asymmetric hydrogenation reactions. This complex serves as a highly efficient and enantioselective catalyst for the reduction of various functional groups, including ketones, imines, and olefins. The chiral environment provided by the (R)-BINAP ligand is crucial for inducing high enantiomeric excess (ee) in the hydrogenated products, which are valuable intermediates in the synthesis of pharmaceuticals, agrochemicals, and fine chemicals. Due to its stability and predictable performance, this Ru(BINAP)(OAc)₂ complex is a staple in both academic research and industrial process development for asymmetric synthesis. It represents a key example of a second-generation chiral transition metal catalyst that has found widespread practical use.