(E)-Cefpodoxime Proxetil (Cefpodoxime Proxetil EP Impurity D) is the (E)-isomer of Cefpodoxime Proxetil (C243860); an antibacterial and broad spectrum, orally absorbed third generation cephalosporin. The (E)-isomer tends to have less antibacterial activity than the (Z)-isomer.
ChEBI: (6R,7R)-7-[[2-(2-amino-4-thiazolyl)-2-methoxyimino-1-oxoethyl]amino]-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 1-[oxo(propan-2-yloxy)methoxy]ethyl ester is a cephalosporin.