we have the following Cefuroxime Sodium impurities( for detailed information,please visit the website http://www.pipitech.com/cefuroxime-sodium_92319.html ):

Cefuroxime Sodium Impurity A (EP)
Cefuroxime Sodium Impurity B (EP)
Cefuroxime Sodium Impurity C (EP)
Cefuroxime Sodium Impurity E (EP)，E-Cefuroxime 
Cefuroxime Sodium Impurity F (EP)
Cefuroxime Sodium Impurity G (EP)
Cefuroxime Sodium Impurity H (EP)
Cefuroxime Sodium Impurity I (EP)
Cefuroxime Sodium Oxide Impurity 1
Cefuroxime Sodium Oxide Impurity 2
(6R,7S)-Cefuroxime
Cefuroxime double mother nucleus
Cefuroxime Impurity 1（Cefuroxime Mother Nucleus）
Cefuroxime Impurity D Δ3-Isomer
Cefuroxime Impurity D（Cefuroxime Axetil Impurity C）
Cefuroxime Sodium Trans Impurity I，(E)-Cefuroxime Sodium Impurity I
△3-Cefuroxime
Cefuroxime Dioxide Impurity(Cefuroxime Sulfoxide)
Cefuroxime Impurity A Double-Bond Shift Impurity

etc.