Active ingredientCeftezoleCat. No. P-C102-001CAS 26973-24-0
Drag to rotate
Impurity or related compound · Ceftezole family
Pharmaceutical analytical standard1H-tetrazole
Synonyms: 2H-tetrazole, Tetraazacyclopentadiene, NSC 36712, Tetrazole
- Cat. No.
- P-C102-004
- CAS
- 288-94-8
- Alternative CAS
- 27988-97-2 (alternative CAS, same compound)
- 100043-29-6 (alternative CAS, same compound)
- 288-95-9 (alternative CAS, same compound)
- Formula
- CH2N4
- Molecular weight
- 70.05 g/mol
- Category
- Impurity or related compound
Family: Ceftezole
A semisynthetic first-generation cephalosporin, similar to cefazolin, studied in Japan as a new antibiotic in the mid-1970s and active against many Gram-positive and Gram-negative bacteria.
Did you know?Its molecule is almost a twin of cefazolin's: the same side chains, except for a methyl group on the thiadiazole ring, present in cefazolin and absent here.
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 Ceftezole family
Active ingredientCeftezoleCat. No. P-C102-001CAS 26973-24-0
Impurity1,3,4-thiadiazoleCat. No. P-C102-002CAS 289-06-5
Impurity1,3,4-thiadiazole-2(3H)-thioneCat. No. P-C102-003CAS 18686-82-3
ImpurityCeftezole Impurity 1Cat. No. P-C102-005CAS 43194-95-2
Impurity2-(1H-tetrazol-1-yl)acetyl chlorideCat. No. P-C102-006CAS 41223-92-1
ImpurityCeftezole Impurity 2Cat. No. P-C102-007
ImpurityCeftezole Impurity 3Cat. No. P-C102-008
ImpurityCeftezole Impurity 4Cat. No. P-C102-009Frequently 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.