ImpurityL-PrimapterinCat. No. P-P188-002CAS 2636-52-4
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Active ingredient · Primapterin family
Pharmaceutical analytical standardPrimapterin
Synonyms: 2-amino-7-(1,2-dihydroxypropyl)-3H-pteridin-4-one, L-Erythro-7-isobiopterin
- Cat. No.
- P-P188-001
- CAS
- 2582-88-9
- Alternative CAS
- N/A
- Formula
- C9H11N5O3
- Molecular weight
- 237.22 g/mol
- Category
- Active ingredient (API)
A pterin isomer of biopterin, also called 7-biopterin, that appears in the urine of children with primapterinuria, a form of hyperphenylalaninaemia described in 1988 and linked to a defect in tetrahydrobiopterin recycling.
Did you know?Unlike classical phenylketonuria, people with primapterinuria usually do not need a low-phenylalanine diet: it is one of the mildest forms of the group.
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 Primapterin family
ImpurityL-PrimapterinCat. No. P-P188-002CAS 2636-52-4Frequently 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.