Synonyms: (+)-DIOP, (+)-2,3-O-Isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)-butane, (+)-1,4-Bis(diphenylphosphino)-1,4-dideoxy-2,3-O-isopropylidene-D-threitol Hill Formula: C₃₁H₃₂O₂P₂ CAS Number: 37002-48-5