2,2′-[[3,3′,5,5′-Tetrakis(1,1-dimethylethyl)[1,1′-biphenyl]-2,2′-diyl]bis(oxy)]bis[biphenyl-1,3,2-dioxaphosphepine], (CAS RN 138776-88-2)
2,2′-[[3,3′,5,5′-Tetrachis(1,1-dimetiletil)[1,1′-bifenil]-2,2′-diil]bis(ossi)bis[bifenil-1,3,2-diossafosfepin], (CAS RN 138776-88-2)