Ampicillin EP Impurity N (Dimer)

Chemical Name: (4S)-2-(1-((R)-2-amino-2-phenylacetamido)-2-(((1R)-2-(((1R)-carboxy((4S)-4-carboxy-5,5-dimethylthiazolidin-2-yl)methyl)amino)-2-oxo-1-phenylethyl)amino)-2-oxoethyl)-5,5-dimethylthiazolidine-4-carboxylic acid, Trisodium salt.