Form
Powder
Appearance
Off-whiteorlightyellowpowder
Source
Synthetic
WaterContent(KarlFisher)
≤2.0%
OpticalRotation
+35°-+43°
Assay
≥98.0%(asis)
Impurities
SingleImpurity:≤1.5%
TotalImpurities:≤2.0%
Cefterampivoxilisathirdgenerationcephalosporinantibiotic.Cefterampivoxilcontainsapivoxilgroupwhichincreaseslipophilicity.Cefterampivoxilisfreelysolubleinethanol,acetonitrile,methanol,andchloroform.
82547-81-7
C22H27N9O7S2
593.64
Likeβ-lactams,cephalosporinsinterferewithPBP(penicillinbindingprotein)activityinvolvedinthefinalphaseofpeptidoglycansynthesis.PBP’sareenzymeswhichcatalyzeapentaglycinecrosslinkbetweenalanineandlysineresiduesprovidingadditionalstrengthtothecellwall.Withoutapentaglycinecrosslink,theintegrityofthecellwallisseverelycompromisedandultimatelyleadstocelllysisanddeath.Resistancetocephalosporinsiscommonlyduetocellscontainingplasmidencodedβ-lactamases.
-20°C
2941.90.3000
Likemanythirdgenerationcephalosporins,cefteramismostlyactiveagainstgramnegativebacteriaespeciallythosewhichcausemeningitisandgonorrhea.
Powder
Off-whiteorlightyellowpowder
Synthetic
≤2.0%
+35°-+43°
≥98.0%(asis)
SingleImpurity:≤1.5%
TotalImpurities:≤2.0%