(R)-(+)-2,2'-Bis[di(3,5-di-t-butylphenyl)phosphino]-6,6'-dimethoxy-1,1'-biphenyl,min.97%;(R)-(+)-2,2''-BIS[DI(3,5-DI-T-BUTYLPHENYL)PHOSPHINO]-6,6''-DIMETHOXY-1,1''-BIPHENYL, MIN. 97%;(R)-(6,6μ-Dimethoxybiphenyl-2,2μ-diyl)bis[bis(3,5-di-tert-butylphenyl)phosphine];(R)-3,5-t-Bu-MeOBIPHEP, SL-A121-1, (R)-2,2μ-Bis[bis(3,5-di-tert-butyl)phosphino]-6,6μ-dimethoxy-1,1μ-biphenyl
