(R)-2-[(3S,4S)-3-[(R)-1-(tert-Butyldimethylsilyloxy)ethyl]-2-oxoazetidin-4-yl]propionic acid90776-58-2100 % similar Azetidon76855-69-158 % similar 4-(tert-Butyldimethylsilyloxy)cyclohexa&55145-45-433 % similar 3-(tert-Butyldimethylsiloxy)glutaric anhydride91424-40-733 % similar (2S,3R)-3-(tert-Butoxy)-2-(((tert-butoxy)carbonyl)amino)butanoic acid13734-40-232 % similar N-[(1,1-Dimethylethoxy)carbonyl]-L-alanyl-L-alanine27317-69-732 % similar N-[(1,1-Dimethylethoxy)carbonyl]-O-methyl-L-threonine48068-25-331 % similar (2S,3R)-2-Amino-3-(tert-butoxy)butanoic acid4378-13-630 % similar