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4-epi-oxytetracycline(oxytetracyclinerelatedcompoundA)isanoxytetracyclinemetaboliteoftenformedinweakacidenvironmentsandhightemperatures.Otheroxytetracyclinemetabolitesincludeα-apo-oxytetracycline(oxytetracyclinerelatedcompoundD)andβ-apo-oxytetracycline(oxytetracyclinerelatedcompoundE).4-epi-oxytetracyclineissolubleinwater(0.5mg/mL),methanol,andDMSO.
14206-58-7
C22H24N2O9
460.43
Likeoxytetracycline,inacellularsystemsofsynthesisofpolyphenylalaninewithribosomesfromtetracyclinesensitiveandresistantstrainsofE.coli,minocyclineandoxytetracyclinehadcloseinhibitingactivity.4-Epi-oxytetracyclineandbeta-apo-oxytetracyclinepossessingcompetingpropertieswithrespecttooxytetracyclineatthestageofpenetrationthroughthecellmembranedidnot,however,suppressthesynthesisofpolyphenylalanineintheacellularsystemisolatedfromthesensitivestrainofE.coli.
-20°C
2941.30.0000
About5%ofthepotencyagainstStaphylococcusaureuswhencomparedwithoxytetracycline
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