2-AZETIDINONE, 3-(2-METHYLPROPYL)-3-PHENYL- 3-Isobutil-3-fenil-2-azetidinone [Italian] 3-Isobutyl-3-phenyl-2-azetidinone 4-21-00-03704 (Beilstein Handbook Reference) 73680-86-1 BRN 0168311 L 1716