80582-03-2

Aztreonam Impurity 50 tert-Butyl ((2S,3S)-2-methyl-4-oxoazetidin-3-yl)carbamate N-[(2S,3S)-2-Methyl-4-oxo-3-azetidinyl]-carbaMic Acid tert-Butyl Ester (2S-trans)-2-Methyl-4-oxo-3-azetidinyl]-carbaMic Acid 1,1-DiMethylethyl Ester N-[(2S,3S)-2-Methyl-4-oxo-3-azetidinyl]-carbaMic Acid 1,1-DiMethylethyl Ester Carbamic acid, N-[(2S,3S)-2-methyl-4-oxo-3-azetidinyl]-, 1,1-dimethylethyl ester