3,3-diethoxy-1-(4-methoxyphenyl)-4-phenyl-2-azetidinone

3-chloro-1-(4-methoxyphenyl)-4-phenyl-3-phenylsulfanylazetidin-2-one

2-Azetidinone, 3-hydroxy-1-(4-methoxyphenyl)-4-phenyl-, (3S,4R)-

3-bis(ethylthio)-1-(4'-methoxyphenyl)-4-phenylazetidin-2-one

3-methylidene-4-phenyl-2-azetidinone