17719-30-1 2-AZETIDINONE, 3-BUTYL-3-PHENYL- 3-Butil-3-finil-2-azetidinone [Italian] 3-Butyl-3-phenyl-2-azetidinone 4-21-00-03704 (Beilstein Handbook Reference) BRN 0174019 L 1721