1886-38-0 2-AZETIDINONE, 3-ETHYL-N-METHYL-3-PHENYL- 2-Azetidinone, 3-ethyl-1-methyl-3-phenyl- (8CI) 3-Ethyl-1-methyl-3-phenyl-2-azetidinone 3-Etil-3-metil-2-azetidinone [Italian] 4-21-00-03681 (Beilstein Handbook Reference) BRN 0158521 L 1743 N-Methyl-3-phenyl-3-ethyl-2-azetidinone NSC 169419