英文别名Ceftazidime Impurity 3; Ceftazidime EP Impurity C; PYCA; (6R,7R)-7-Amino-8-oxo-3-(1-pyridiniumylmethyl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate; Pyridinium, 1-[[(6R,7R)-7-amino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-, inner salt; (6R,7R)-7-AMINO-3-(1-PYRIDINIUM-METHYL)CEPH-3EM-4-CARBOXYLIC,ENTERPRISE STANDARD; (6R-trans)-1-[(7-AMino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl)Methyl]pyridi; 1-[[(6R,7R)-7-AMino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]Methyl]-pyridiniuM Inner Salt; APYA; (7R)-7-amino-8-oxo-3-(pyridin-1-ium-1-ylmethyl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 
