Aztreonam USP RC D

Chemical Name: Aztreonam USP Impurity D ; Desulfated aztreonam ; Aztreonam Desulfated Impurity ; (Z)-2-({[(2-Amino-4-thiazolyl){[(2S,3S)-2-methyl-4-oxo-3-azetidinyl]carbamoyl}methylene]amino}oxy)-2-methylpropionic acid