Form
Powder
Appearance
Whitecrystallinepowder
Source
Semi-synthetic
WaterContent(KarlFisher)
≤1.0%
pH
3.5-5.5
OpticalRotation
+280°to+305°
Assay
(OnDriedBasis):≥98.0%
SulfatedAsh
≤0.3%
HeavyMetals
≤20ppm
Ampicillinanhydrousisamemberoftheextendedspectrumβ-lactamfamilyandsimilarinstructuretopenicillin.ResistancetoAmpicillinisduetocellscontainingplasmidencodedESBLs.
TOKU-Eoffersfiveformsofampicillin:
Inaqueoussolution,ampicillinsodiumisfreelysoluble(50mg/mL).Ampicillintrihydrateisslightlysolubleinwater(10mg/mL)andfreelysolublein1NHCl(50mg/mL).Ampicillinanhydrousissparinglysolubleinwaterandfreelysolublein1NNH4OH(50mg/mL).Ampicillinsodiumiscommonlyusedtoselectforsuccessfullytransformedbacteria.Ampicillinanhydrous(powder)isthemoststableandpureformofampicillinTOKU-Eoffers.
69-53-4
C16H19N3O4S
349.40
Likeallβ-lactams,ampicillininterfereswithPBP(penicillinbindingprotein)activityotherwiseinvolvedinthefinalphaseofpeptidoglycansynthesis.PBP’sareenzymeswhichcatalyzeapentaglycinecrosslinkbetweenalanineandlysineresidues.Withoutapentaglycinecrosslink,theintegrityofthecellwallisseverelycompromisedultimatelyleADIngtocelllysis.
2-8°C
2941.10.1000
AmpicillintargetsnonESBL(ExtendedSpectrumβ-lactamase)bacteriaincludingStaphylococcusandStreptococcusandmedicallyimportantentericpathogenssuchasShigellaandSalmonella.Interestingly,ampicillinhasbeenfoundtobeeffectiveagainstcertainβ-lactamsensitiveVREorvancomycinresistantEnterococcus;aglycopeptideantibioticresistant"superbug."
Powder
Whitecrystallinepowder
Semi-synthetic
≤1.0%
3.5-5.5
+280°to+305°
(OnDriedBasis):≥98.0%
≤0.3%
≤20ppm