Aztreonam Impurity D Catalogue A242504 CAS 102579-59-9 M.W 354.36 22.99 M.F C13H16N5O5S. Na Specifications FAQs 2-((((Z)-1-(2-aminothiazol-4-yl)-2-(((2S,3S)-2-methyl-4-oxoazetidin-3-yl)amino)-2-oxoethylidene)amino)oxy)-2-methylpropanoic acid
