Cefpodoxime Proxetil - Impurity I

NA

Bis[(1RS)-[[(1-methylethoxy)carbonyl]oxy]ethyl] (6R,7R,6’S,7’S)-7,7’-[carbonylbis[iminothiazole-2,4-diyl[(2Z)-2-(methoxyimino)-1-oxoethane-2,1-diyl]imino]]bis[3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate]; bis((R)-1-((isopropoxycarbonyl)oxy)ethyl) 7,7'-(((2Z,2'Z)-2,2'-((carbonylbis(azanediyl))bis(thiazole-2,4-diyl))bis(2-(methoxyimino)acetyl))bis(azanediyl))(6R,6'R,7R,7'R)-bis(3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate);