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WaterContent(KarlFisher)
3.0-4.5%
Assay
860-1003µg/mg(ondriedbasis)
ResidueOnIgnition
≤0.5%
Cefmetazoleisabroadspectrumsecondgenerationcephalosporinantibiotic.TOKU-Eofferstwoformsofcefmetazole:cefmetazole,freeacid(C122),andcefmetazolesodium(C052).Cefmetazoleisfreelysolubleinwater92mg/mL.
56796-39-5
C15H16N7O5S3Na
493.52
Likeβ-lactams,cephalosporinsinterferewithPBP(penicillinbindingprotein)activityinvolvedinthefinalphaseofpeptidoglycansynthesis.PBP’sareenzymeswhichcatalyzeapentaglycinecrosslinkbetweenalanineandlysineresiduesprovidingadditionalstrengthtothecellwall.Withoutapentaglycinecrosslink,theintegrityofthecellwallisseverelycompromisedandultimatelyleadstocelllysisanddeath.Resistancetocephalosporinsiscommonlyduetocellscontainingplasmidencodedβ-lactamases.
-20°C
2941.90.3000
CefmetazoleisbroadspectrumantibiotictargetingawiderangeofGram-positiveandGram-negativebacteria.CefmetazoleismorepotentagainstmanyGram-negativeentericfloraandpathogensthanotherfirstgenerationcephalosporins.
Powder
WhiteorOff-WhitePowder
3.0-4.5%
860-1003µg/mg(ondriedbasis)
≤0.5%