Active ingredientPemirolastCat. No. P-P037-001CAS 69372-19-6
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Active ingredient · Pemirolast family
Pharmaceutical analytical standardPemirolast Potassium Salt
Synonyms: Pemirolast Potassium, Alamast, Pemilaston, Alegysal, Permirolast potassium, Monopotassium 5-(9-methyl-4-oxo-4H-pyrido(1,2-a)pyrimidin-3-yl)-1H-tetrazol-1-ide
- Cat. No.
- P-P037-002
- CAS
- 100299-08-9
- Alternative CAS
- 69372-19-6 (free acid)
- 1892941-21-7 (hydrate)
- 2206688-61-9 (hydrate)
- Formula
- C10H7KN6O
- Molecular weight
- 266.31 g/mol
- Category
- Active ingredient (API)
Family: Pemirolast
An anti-allergic drug that stabilises mast cells and curbs the release of histamine and other allergy mediators; in Japan it was introduced as tablets, syrup and eye drops, while in the United States it was approved in 1999 as eye drops for allergic conjunctivitis.
Did you know?In Japan it was one of the medicines switched from prescription to over-the-counter status, both as anti-allergy eye drops and as an oral remedy for the nose.
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 Pemirolast family
Active ingredientPemirolastCat. No. P-P037-001CAS 69372-19-6
Isotopically labelled3-(Methyl-d3)pyridin-4,5,6-d3-2-amineCat. No. P-P037-003CAS 2247346-23-0
Isotopically labelledPemirolast-d6 Potassium SaltCat. No. P-P037-004
ImpurityPemirolast Impurity 1Cat. No. P-P037-005CAS 122149-47-7
ImpurityPemirolast Impurity 2Cat. No. P-P037-006CAS 113950-80-4![9-Methylpyrido[1,2-a]pyrimidin-2-one](https://img.vitasanlabs.com/vsl-struct/P-P037-007.svg?v=41e934f030)
Impurity9-Methylpyrido[1,2-a]pyrimidin-2-oneCat. No. P-P037-007CAS 16075-71-1
ImpurityPemirolast Impurity 3Cat. No. P-P037-008
ImpurityPemirolast Impurity 4Cat. No. P-P037-009Frequently 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.