Active ingredientFlomoxefCat. No. P-F059-001CAS 99665-00-6
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Impurity or related compound · Flomoxef family
Pharmaceutical analytical standardFlomoxef Impurity 19
Synonyms: (2R)-2-[(R)-Amino-carboxy-methoxymethyl]-5-[[1-(2-hydroxyethyl)tetrazol-5-yl]sulfanylmethyl]-3,6-dihydro-2H-1,3-oxazine-4-carboxylic acid
- Cat. No.
- P-F059-027
- CAS
- N/A
- Alternative CAS
- N/A
- Formula
- C12H18N6O7S
- Molecular weight
- 390.37 g/mol
- Category
- Impurity or related compound
Family: Flomoxef
A beta-lactam antibiotic of the oxacephem class, related to the cephalosporins, patented in 1982 and approved in Japan in 1988 to treat bacterial infections.
Did you know?The suffix -oxef marks antibiotics derived from oxacephalosporanic acid: compared with classic cephalosporins, an oxygen atom takes the place of sulphur in the ring.
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 Flomoxef family
Active ingredientFlomoxefCat. No. P-F059-001CAS 99665-00-6
Active ingredientFlomoxef Sodium SaltCat. No. P-F059-002CAS 92823-03-5
ImpurityFlomoxef Impurity 1Cat. No. P-F059-005CAS 88570-74-5
Impurity2-(5-Mercaptotetrazole-1-yl)ethanolCat. No. P-F059-006CAS 56610-81-2
ImpurityFlomoxef Impurity 2Cat. No. P-F059-007
ImpurityFlomoxef Impurity 3Cat. No. P-F059-008
ImpurityFlomoxef Impurity 4Cat. No. P-F059-009
ImpurityFlomoxef Impurity 5Cat. No. P-F059-010Frequently 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.