(3S,4S)-3-Amino-4-trifluoromethyl-azetidin-2-one

5-cyclohexyl-3-hydroxy-N-(2-morpholin-4-ylethyl)-4-[[2-[[4-morpholin-4-yl-2-(naphthalen-1-ylmethyl)-4-oxobutanoyl]amino]-3-(1,3-thiazol-4-yl)propanoyl]amino]pentanamide

(3S,4S)-3-amino-4-(fluoromethyl)azetidin-2-one

(3S,4R)-3-amino-4-(trifluoromethyl)azetidin-2-one

cis,rac-3-Azido-4-(trifluoromethyl)-2-azetidinone

(S)-3-Amino-2,2-dimethyl-4-oxoazetidin-1-yl hydrogen sulfate

(+/-)-3β,4β-dimethyl-3α-(phenylthio)azetidin-2-one