Active ingredientZafirlukastCat. No. P-Z001-001CAS 107753-78-6
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Impurity or related compound · Zafirlukast family
Pharmaceutical analytical standardHydroxy Zafirlukast
- Cat. No.
- P-Z001-005
- CAS
- N/A
- Alternative CAS
- N/A
- Formula
- C31H33N3O7S
- Molecular weight
- 591.68 g/mol
- Category
- Impurity or related compound
Family: Zafirlukast
A CysLT1 leukotriene receptor antagonist, approved in the United States in 1996 for the prevention and long-term treatment of asthma in adults and children over five.
Did you know?It was the first cysteinyl leukotriene receptor antagonist approved in the United States: it blocks the messengers released by eosinophils, basophils and lung macrophages that make the airways narrow.
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 Zafirlukast family
Active ingredientZafirlukastCat. No. P-Z001-001CAS 107753-78-6
Isotopically labelledZafirlukast-d7Cat. No. P-Z001-004CAS 1217174-18-9
ImpurityN-Desmethyl N-Hydroxymethyl ZafirlukastCat. No. P-Z001-006
ImpurityZafirlukast Impurity 1Cat. No. P-Z001-007
ImpurityZafirlukast Impurity 2Cat. No. P-Z001-008
ImpurityZafirlukast Impurity 3Cat. No. P-Z001-009
ImpurityZafirlukast Impurity 4Cat. No. P-Z001-010CAS 107754-20-1
ImpurityZafirlukast Impurity 5Cat. No. P-Z001-011Frequently 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.