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

共找到 2 条结果，关键词：Cefuroxime+Impurity+21

(6R,7R)-7-((6R,7R)-7-((Z)-2-(furan-2-yl)-2-(methoxyimino)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid PubChem CID 176477745

CO/N=C(\C(=O)N[C@@H]1C(=O)N2C(C(=O)N[C@@H]3C(=O)N4C(C(=O)O)=C(C)CS[C@H]34)=C(C)CS[C@H]12)c1ccco1
(6R,7R)-3-(HYDROXYMETHYL)-8-OXO-7-((((PYRIDIN-4-YL)SULFANYL)ACETYL)AMINO)-5-THIA-1-AZABICYCLO(4.2.0)OCT-2-ENE-2-CARBOXYLIC ACID CAS 38115-21-8 PubChem CID 162287

O=C(CSc1ccncc1)N[C@@H]1C(=O)N2C(C(=O)O)=C(CO)CS[C@H]12