Aztreonam Impurity 42

tert-Butyl 2-Bromo-2-methylpropanoate-D6 Ethyl (Z)-2-(2-Aminothiazol-4-yl)-2-(1-t-butoxycarbonyl-1-methyl)ethoxyiminoacetate-D6 2-Mercaptobenzothiazolyl-(Z)-(2-aminothiazol-4-yl)-2-(tert-butoxycarbonyl)isopropoxyiminoacetate-D6 AZTREONAM-D6 Aztreonam Impurity 41 Aztreonam Impurities 06 [(2S-trans)-1-Methoxy-2-Methyl-4-oxo-3-azetidinyl]-carbaMic Acid 1,1-DiMethylethyl Ester Aztreonam Amide 2-Bromo-2-methylpropionyl-D6 Bromide AztreonaM IMpurity F N-[(2S,3S)-2-Methyl-4-oxo-3-azetidinyl]-carbaMic Acid tert-Butyl Ester (Z)-2-(2-Aminothiazol-4-yl)-2-(1-carboxy-1-methyl)ethoxyiminoacetic acid Propanoic acid, 2-[[(Z)-[1-(2-amino-4-thiazolyl)-2-[[(2S,3S)-2-methyl-4-oxo-1-sulfo-3-azetidinyl]amino]-2-oxoethylidene]amino]oxy]-2-methyl-, 1-(1,1-dimethylethyl) ester