(S)-(-)-2,2′,6,6′-四甲氧基-4,4′-双(二苯基膦)-3,3′-联吡啶

(S)-(-)-2,2′,6,6′-四甲氧基-4,4′-双(二苯基膦)-3,3′-联吡啶

(S)-(?)-2,2′,6,6′-Tetramethoxy-4,4′-bis(diphenylphosphino)-3,3′-bipyridine