Form
Powder
Appearance
Whitetogrey-yellowpowder
Source
Synthetic
WaterContent(KarlFisher)
≤3.0%
pH
5.5-7.5
Assay
≥95.0%(ondriedbasis)
ResidualSolvents
≤0.5%
Ceftiofursodiumisathirdgenerationcephalosporinantibioticcommonlyusedinveterinarymedicine.
TOKU-ECompanyofferstwoformsofceftiofur:Ceftiofursodium(C061)andceftiofurhydrochloride(C228).Ceftiofursodiumisfreelysolubleinaqueoussolution,whileceftiofurhydrochlorideisinsolubleinwater.
104010-37-9
C19H16N5NaO7S3
545.54g/mol
Likeβ-lactams,cephalosporinsinterferewithPBP(penicillinbindingprotein)activityinvolvedinthefinalphaseofpeptidoglycansynthesis.PBP’sareenzymeswhichcatalyzeapentaglycinecrosslinkbetweenalanineandlysineresiduesprovidingadditionalstrengthtothecellwall.Withoutapentaglycinecrosslink,theintegrityofthecellwallisseverelycompromisedandultimatelyleadstocelllysisanddeath.Resistancetocephalosporinsiscommonlyduetocellscontainingplasmidencodedβ-lactamases.Likemanycephalosporins,ceftiofurisresistanttoβ-lactamases.
-20°C
2941.90.5000
Ceftiofurisabroadspectrumantibiotictargetingawidevarietyofgrampositiveandgramnegativebacteria.
Powder
Whitetogrey-yellowpowder
Synthetic
≤3.0%
5.5-7.5
≥95.0%(ondriedbasis)
≤0.5%