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基于 PubChem CID 索引，支持名称 / 同义词 / CAS / SMILES 检索。

共找到 4 条结果，关键词：Cefazolin+Impurity+45

Butanoic acid, 4-chloro-2-(hydroxyimino)-3-oxo-, ethyl ester, (Z)- CAS 66338-95-2 PubChem CID 136249037

CCOC(=O)C(N=O)=C(O)CCl
5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-[(acetyloxy)methyl]-8-oxo-7-[[2-(1H-tetrazol-1-yl)acetyl]amino]-, sodium salt (1:1), (6R,7R)- CAS 27164-45-0 PubChem CID 23673267

CC(=O)OCC1=C(C(=O)[O-])N2C(=O)[C@@H](NC(=O)Cn3cnnn3)[C@H]2SC1.[Na+]
Cefazolin EP Impurity D Sodium Salt CAS 27164-45-0 PubChem CID 176489244

CC(=O)OCC1=C(C(=O)O)N2C(=O)C(N=C([O-])Cn3cnnn3)C2SC1.[Na+]
(R)-2-((R)-amino(carboxy)methyl)-5-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-3,6-dihydro-2H-1,3-thiazine-4-carboxylic acid PubChem CID 177833134

Cc1nnc(SCC2=C(C(=O)O)N[C@@H]([C@H](N)C(=O)O)SC2)s1