(S)-(-)-2,2’-Bis[di(3,4,5-trimethoxyphenyl)phosphino]-6,6’-dimethoxy-1,1’-biphenyl,min.97%;(S)-(-)-2,2’’-BIS[DI(3,4,5-TRIMETHOXYPHENYL)PHOSPHINO]-6,6’’-DIMETHOXY-1,1’’-BIPHENYL, MIN. 97%
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