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![(6R,7R)-7-Amino-3-[(5-methyl-2H-tetrazol-2-yl)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid cas 82549-51-7 Cefteram mother nucleus](/static/upload/image/20220902/1662088289952079.jpg)
![(6R,7R)-7-Amino-3-[(5-methyl-2H-tetrazol-2-yl)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid cas 155723-02-7 ParentnucleusofCefditoren](/static/upload/image/20220830/1661846451785202.png)
![7-TDA cas 30246-33-4 (7r)-7-amino-3-[(5-methyl-1,3,4-thiadiazol-2-yl)thiomethyl]-3-cephem-4-carboxylicacid white powder](/static/upload/image/20220830/1661843219779687.jpg)
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