(2RS,6R,7R)-7-[[(2Z)-2-(2-aminothiazol-4-yl)-2-[(1-carboxy-1-methylethoxy)imino]acetyl]amino]-8-oxo-3-[(1-pyridinio)methyl]-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylate (Δ-2-ceftazidime)

②頭孢他啶雜質B  Ceftazidime Impurity B
 (6R,7R)-7-[[(2E)-2-(2-aminothiazol-4-yl)-2-[(1-carboxy-
1-methylethoxy)imino]acetyl]amino]-8-oxo-3-[(1-
pyridinio)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-
carboxylate

③頭孢他啶雜質C  Ceftazidime Impurity C   CAS NO:3432-88-0
(6R,7R)-7-amino-8-oxo-3-[(1-pyridinio)methyl]-5-thia-1-
azabicyclo[4.2.0]oct-2-ene-2-carboxylate

④頭孢他啶雜質E  Ceftazidime Impurity E    CAS NO:102772-66-7
(6R,7R)-7-[[(2Z)-2-(2-aminothiazol-4-yl)-2-[[2-(1,1-dimethylethoxy)-
1,1-dimethyl-2-oxoethoxy]imino]acetyl]
amino]-8-oxo-3-[(1-pyridinio)methyl]-5-thia-1-azabicyclo[
4.2.0]oct-2-ene-2-carboxylate

⑤頭孢他啶雜質F  Ceftazidime Impurity F    CAS NO:110-86-1
pyridine

⑥頭孢他啶雜質G  Ceftazidime Impurity G    CAS NO:194241-83-3
2-[[[(1Z)-1-(2-aminothiazol-4-yl)-2-[(oxoethyl)amino]-2-
oxoethylidene]amino]oxy]-2-methylpropanoic acid

⑦頭孢他啶雜質H  Ceftazidime Impurity H
(6R,7R)-7-[[(2Z)-2-(2-aminothiazol-4-yl)-2-[(2-methoxy-1,
1-dimethyl-2-oxoethoxy)imino]acetyl]amino]-8-oxo-3-[(1-
pyridinio)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-
carboxylate