Active ingredientNorfloxacinCat. No. P-N092-001CAS 70458-96-7
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Pharmacopoeial impurity · Norfloxacin family
Pharmaceutical analytical standardNorfloxacin EP Impurity K
Synonyms: 6-fluoro-1-methyl-4-oxo-7-piperazin-1-ylquinoline-3-carboxylic acid, Norfloxacin Impurity K, Norfloxacin EP Imp K
- Cat. No.
- P-N092-015
- CAS
- 70459-07-3
- Alternative CAS
- 74011-48-6 (hydrochloride)
- Formula
- C15H16FN3O3
- Molecular weight
- 305.31 g/mol
- Category
- Pharmacopoeial impurity (EP/USP)
Family: Norfloxacin
An antibiotic of the fluoroquinolone family, discovered in Japan in the late 1970s and approved in the United States in 1986, used mainly for urinary tract infections.
Did you know?It descends from nalidixic acid, born as a by-product of the synthesis of the antimalarial chloroquine: adding a single fluorine atom to the quinolone ring greatly broadened its activity, hence the name fluoroquinolones.
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 Norfloxacin family
Active ingredientNorfloxacinCat. No. P-N092-001CAS 70458-96-7
Pharmacopoeial impurityNorfloxacin EP Impurity ACat. No. P-N092-002CAS 68077-26-9
Pharmacopoeial impurityNorfloxacin EP Impurity B HClCat. No. P-N092-003CAS 1797116-86-9
Pharmacopoeial impurityNorfloxacin EP Impurity CCat. No. P-N092-004CAS 177554-64-2
Pharmacopoeial impurityNorfloxacin EP Impurity C HClCat. No. P-N092-005
Pharmacopoeial impurityNorfloxacin EP Impurity DCat. No. P-N092-006CAS 75001-82-0
Pharmacopoeial impurityNorfloxacin EP Impurity ECat. No. P-N092-007CAS 75001-78-4
Pharmacopoeial impurityNorfloxacin EP Impurity E HCl SaltCat. No. P-N092-008CAS 75001-85-3Frequently 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.