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Record Information
Creation Date2009-07-30 17:58:46 UTC
Update Date2014-12-24 20:26:07 UTC
Accession NumberT3D3492
Common NameCephalosporin
ClassSmall Molecule
DescriptionCeftibuten is a third-generation cephalosporin antibiotic. It is an orally-administered agent. Cefalexin is used to treat acute bacterial exacerbations of chronic bronchitis (ABECB), acute bacterial otitis media, pharyngitis, and tonsilitis.
Compound Type
  • Amide
  • Amine
  • Anti-Bacterial Agent
  • Cephalosporin
  • Drug
  • Ester
  • Ether
  • Organic Compound
  • Synthetic Compound
Chemical Structure
(+)-(6R,7R)-7-((Z)-2-(2-amino-4-Thiazolyl)-4-carboxycrotonamido)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid
Chemical FormulaC15H14N4O6S2
Average Molecular Mass410.425 g/mol
Monoisotopic Mass410.035 g/mol
CAS Registry Number97519-39-6
IUPAC Name(6R,7R)-7-[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-4-carboxybut-2-enamido]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Traditional Nameceftibuten
InChI IdentifierInChI=1S/C15H14N4O6S2/c16-15-17-7(5-27-15)6(1-2-9(20)21)11(22)18-10-12(23)19-8(14(24)25)3-4-26-13(10)19/h1,3,5,10,13H,2,4H2,(H2,16,17)(H,18,22)(H,20,21)(H,24,25)/b6-1-/t10-,13-/m1/s1
Chemical Taxonomy
Description belongs to the class of organic compounds known as 4-hydroxycoumarins. These are coumarins that contain one or more hydroxyl groups attached to C4-position the coumarin skeleton.
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
ClassCoumarins and derivatives
Sub ClassHydroxycoumarins
Direct Parent4-hydroxycoumarins
Alternative Parents
  • 4-hydroxycoumarin
  • Benzopyran
  • 1-benzopyran
  • Nitrobenzene
  • Nitroaromatic compound
  • Pyranone
  • Monocyclic benzene moiety
  • Pyran
  • Benzenoid
  • Heteroaromatic compound
  • Vinylogous acid
  • Ketone
  • Lactone
  • C-nitro compound
  • Organic nitro compound
  • Oxacycle
  • Organic oxoazanium
  • Organoheterocyclic compound
  • Allyl-type 1,3-dipolar organic compound
  • Propargyl-type 1,3-dipolar organic compound
  • Organic 1,3-dipolar compound
  • Organopnictogen compound
  • Hydrocarbon derivative
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxide
  • Organic oxygen compound
  • Organic nitrogen compound
  • Carbonyl group
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
Cellular Locations
  • Membrane
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
AppearanceWhite powder.
Experimental Properties
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
LogPNot Available
Predicted Properties
Water Solubility0.07 g/LALOGPS
pKa (Strongest Acidic)2.99ChemAxon
pKa (Strongest Basic)4.69ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count8ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area162.92 ŲChemAxon
Rotatable Bond Count6ChemAxon
Refractivity97.02 m³·mol⁻¹ChemAxon
Polarizability38.5 ųChemAxon
Number of Rings3ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-00l6-4429000000-9eb742eca3a39f7f33c7View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (2 TMS) - 70eV, Positivesplash10-007c-5112290000-67c5009b631f19f5afd3View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-00kf-1956200000-fb5911483fe37835ee05View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00kf-1952000000-968eb058db01aac16058View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-05py-6900000000-5b91131b300dfce27ffeView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-067i-0197100000-b92f44385691c61e259fView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0159-6497000000-897341155f6550b60c89View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-052f-9210000000-0931070d4e68d3481619View in MoNA
Toxicity Profile
Route of ExposureRapidly absorbed following oral administration.
Mechanism of ToxicityCeftibuten exerts its bactericidal action by binding to essential target proteins of the bacterial cell wall. This binding leads to inhibition of cell-wall synthesis.
MetabolismA study with radiolabeled ceftibuten administered to 6 healthy adult male volunteers demonstrated that cis-ceftibuten is the predominant component in both plasma and urine. About 10% of ceftibuten is converted to the trans-isomer is approximately 1/8 as antimicrobially potent as the cis-isomer. Route of Elimination: Ceftibuten is excreted in the urine; 95% of the administered radioactivity was recovered either in urine or feces.
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesUsed to treat acute bacterial exacerbations of chronic bronchitis (ABECB), acute bacterial otitis media, pharyngitis, and tonsilitis. It is also indicated for pneumonia, infections of the urinary tract, enteritis and gastroenteritis. [Wikipedia]
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsOverdosage of cephalosporins can cause cerebral irritation leading to convulsions.
TreatmentNot Available
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
DrugBank IDDB01415
HMDB IDNot Available
PubChem Compound ID5282242
ChemSpider ID4445418
UniProt IDNot Available
ChEBI ID3510
BioCyc IDNot Available
CTD IDNot Available
Stitch IDCephalosporin
PDB IDNot Available
ACToR IDNot Available
Wikipedia LinkCeftibuten
Synthesis ReferenceNot Available
General ReferencesNot Available
Gene Regulation
Up-Regulated GenesNot Available
Down-Regulated GenesNot Available


General Function:
Proton-dependent oligopeptide secondary active transmembrane transporter activity
Specific Function:
Proton-coupled intake of oligopeptides of 2 to 4 amino acids with a preference for dipeptides. May constitute a major route for the absorption of protein digestion end-products.
Gene Name:
Uniprot ID:
Molecular Weight:
78805.265 Da
Binding/Activity Constants
TypeValueAssay TypeAssay Source
Inhibitory340 uMNot AvailableBindingDB 50370586
  1. Luckner P, Brandsch M: Interaction of 31 beta-lactam antibiotics with the H+/peptide symporter PEPT2: analysis of affinity constants and comparison with PEPT1. Eur J Pharm Biopharm. 2005 Jan;59(1):17-24. [15567297 ]
  2. Biegel A, Gebauer S, Hartrodt B, Brandsch M, Neubert K, Thondorf I: Three-dimensional quantitative structure-activity relationship analyses of beta-lactam antibiotics and tripeptides as substrates of the mammalian H+/peptide cotransporter PEPT1. J Med Chem. 2005 Jun 30;48(13):4410-9. [15974593 ]