Cefazolin-13C2,15N

Cefazolin-13C2,15N is intended for use as an internal standard for the quantification of cefazolin (Cay-15776) by GC- or LC-MS. Cefazolin is a broad-spectrum cephalosporin antibiotic that is active in vitro against various Gram-positive and Gram-negative bacteria (MICs = 0.2-12.5 µg/ml). It also inhibits the growth of clinical isolates of S. aureus, E. coli, P. mirabilis, and K. pneumoniae (MICs = 0.1-25 µg/ml). In vivo, cefazolin protects against S. aureus, E. coli, and P. mirabilis infection in mice (ED50s = <0.09-1.78, 0.44-3.63, and 2.31-5.2 mg/animal, respectively). Formulations containing cefazolin have been used to treat a variety of bacterial infections.Formal Name: (6R,7R)-7-(2-(1H-tetrazol-1-yl-1-15N)acetamido-13C2-13C2)-3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid. CAS Number: 2101505-58-0. Molecular Formula: C12[13C]2H14N7[15N]O4S3. Formula Weight: 457.5. Purity: >95%. Formulation: (Request formulation change), A solid. Solubility: DMF: Soluble. SMILES: O=[13C]([13CH2][15N]1N=NN=C1)N[C@H](C2=O)[C@]3([H])N2C(C(O)=O)=C(CSC4=NN=C(C)S4)CS3. InChi Code: InChI=1S/C14H14N8O4S3/c1-6-17-18-14(29-6)28-4-7-3-27-12-9(11(24)22(12)10(7)13(25)26)16-8(23)2-21-5-15-19-20-21/h5,9,12H,2-4H2,1H3,(H,16,23)(H,25,26)/t9-,12-/m1/s1/i2+1,8+1,21+1. InChi Key: MLYYVTUWGNIJIB-ZDZFQHAJSA-N.