
7 β - aMino - 3 - [4 - pyridyl - 2 - thiazole sulfur radical ] - 3 - cepheM - 4 - carboxylic acid , 99.9% , 【189345-52-6】
                                    Molecular Formula: C16H14N4O3S3
                                                                    Formula Weight: 406.49
                                
                            
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