Active ingredientCeftibutenCat. No. P-C103-001CAS 97519-39-6
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Impurity or related compound · Ceftibuten family
Pharmaceutical analytical standardCeftibuten Impurity 13 (Mixture of Z and E Isomers)
Synonyms: 5-Ethoxy-5-oxo-2-[2-(phenylmethoxycarbonylamino)-1,3-thiazol-4-yl]pent-2-enoic acid
- Cat. No.
- P-C103-021
- CAS
- 1140311-29-0
- Alternative CAS
- N/A
- Formula
- C18H18N2O6S
- Molecular weight
- 390.41 g/mol
- Category
- Impurity or related compound
Family: Ceftibuten
An oral third-generation cephalosporin antibiotic. Approved in the United States in 1995, it is used for respiratory tract infections such as otitis media, pharyngitis, tonsillitis and flare-ups of chronic bronchitis; in other countries also for urinary infections.
Did you know?Thirty years on it is back in the spotlight: paired with ledaborbactam, a boron-based beta-lactamase inhibitor, it is being studied as an oral antibiotic against multidrug-resistant Enterobacterales, including carbapenemase producers.
The two levels compared
| Level 1 Mass balance | Level 2 Mass balance + qNMR | |
|---|---|---|
| Identity (IR, MS, 1H and 13C-NMR; peptides: ESI-MS, MALDI-TOF and IR) | ✓ | ✓ |
| HPLC purity (min. 95%) | ✓ | ✓ |
| Content by mass balance (min. 90%; peptides: for information only)* | ✓ | ✓ |
| Content verified by qNMR (small molecules only) | · | ✓ |
| Suitable to qualify it as an in-house primary standard (ICH Q7) | · | ✓ |
* Mass balance is performed on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it, for example oils and highly volatile substances, on which some of the required measurements cannot be made: in those cases the CoA states how the content was assigned.
What you receive
The analytical standard
Shipped under controlled temperature when the molecule requires it.
Certificate of analysis (CoA)
For every lot: identity, purity and assay, with the supporting spectra and chromatograms.
Safety data sheet (SDS)
Sent with every order.
Tracked shipment
Follow your shipment live, from our warehouse to your lab.
More products in the Ceftibuten family
Active ingredientCeftibutenCat. No. P-C103-001CAS 97519-39-6
Active ingredientCeftibuten HydrateCat. No. P-C103-003CAS 118081-37-1
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Impurity(E)-Ceftibuten DihydrateCat. No. P-C103-008CAS 1428117-81-0
ImpurityCeftibuten Impurity 1Cat. No. P-C103-009CAS 102199-53-1
ImpurityCeftibuten Impurity 2Cat. No. P-C103-010
ImpurityCeftibuten Impurity 3Cat. No. P-C103-011CAS 103054-27-9
ImpurityCeftibuten Impurity 5Cat. No. P-C103-013Frequently asked questions
Is mass balance always performed?
Yes, on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it: for example oils and highly volatile substances, on which some measurements (such as thermogravimetry) cannot be made. In those cases the CoA states which method was used to assign the content.
Can I ask for a different quantity?
Yes. The quantities are only suggestions: choose "Other" and enter the milligrams or grams you need.
Which level should I choose?
Level 1 is enough for most routine testing. Level 2 adds an independent qNMR content value and is meant for labs that need to qualify an in-house primary standard. For peptides and similar molecules, Level 2 is not available.
When will I get the quote?
Within 24 working hours, with price, availability and delivery time.
Need a molecule you cannot find?
Custom synthesis of impurities, metabolites and labelled compounds, with the same characterisation level.