CAS 2118959-55-8 appears in our catalog under these names: Ephos 97%, Dicyclohexyl(3-isopropoxy-2',4',6'-triisopropyl-[1,1'-biphenyl]-2-yl)phosphine, 98%, 98%, Dicyclohexyl(3-isopropoxy-2',4',6'-triisopropyl-[1,1'-biphenyl]-2-yl)phosphine, 98%. Offered by: Ambeed, Chemat, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 5g, 10g.