3771040 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3771040 > 2 > ChemIDplus > 079239193 > 5-Thia-1-azabicyclo(4.2.0)oct-2-one-2-carboxylic acid, 3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-8-oxo-7-((1H-tetrazol-1-ylacetyl)amino)-, methyl ester, (6R-trans)- 79239-19-3 Cefazolin delta-2-methyl ester Methyl 3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-8-oxo-7-((1H-tetrazol-1-ylacetyl)amino)-5-thia-1-azabicyclo(4.2.0)oct-2-one-2-carboxylate (6R-trans)- Ro 19-5248A Ro-19-5248A > 79239-19-3 > 079239193 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=079239193 $$$$