(Z)-2-((((2-Amino-4-thiazolyl)(((2S,3S)-2-methyl-4-oxo-1-sulfo-3-azetidinyl)carbamoyl)methylene)amino)oxy)-2-methylpropionic acid disodium salt 80581-86-8 Azactam disodium Azthreonam disodium Aztreonam disodium Propanoic acid, 2-(((1-(2-amino-4-thiazolyl)-2-((2-methyl-4-oxo-1-sulfo-3-azetidinyl)amino)-2-oxoethylidine)amino)oxy)-2-methyl-, (2S-(2-alpha,3-beta(Z)))-, disodium salt