Active ingredientAsparagine Monohydrate (L-Asparagine Monohydrate)Cat. No. P-A200-001CAS 5794-13-8
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Impurity or related compound · Asparagine family
Pharmaceutical analytical standard(2S,3R)-3-Hydroxyasparagine
Synonyms: Asparagine, 3-hydroxy-, L-erythro-, L-Asparagine, 3-hydroxy-, erythro-, L-Asparagine, 3-hydroxy-, (3R)-
- Cat. No.
- P-A200-004
- CAS
- 20790-74-3
- Alternative CAS
- N/A
- Formula
- C4H8N2O4
- Molecular weight
- 148.12 g/mol
- Category
- Impurity or related compound
Family: Asparagine
A non-essential amino acid found in proteins: the body makes it on its own and also uses it as an anchoring point for the sugar chains of glycoproteins. It is abundant in dairy, meat, eggs, potatoes and soy.
Did you know?It was the first amino acid ever isolated: in 1806 the French chemists Louis Nicolas Vauquelin and Pierre Jean Robiquet obtained it from asparagus juice, hence the name.
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 Asparagine family
Active ingredientAsparagine Monohydrate (L-Asparagine Monohydrate)Cat. No. P-A200-001CAS 5794-13-8
Pharmacopoeial impurityAsparagine EP Impurity CCat. No. P-A200-002CAS 88206-98-8
Isotopically labelledL-Asparagine-2,3,3-d3Cat. No. P-A200-003
Impurity(2S,3S)-3-HydroxyasparagineCat. No. P-A200-005CAS 20790-72-1
ImpurityD-AsparagineCat. No. P-A200-006CAS 2058-58-4
ImpurityFucosyl-N-Acetylglucosaminy-L-AsparagineCat. No. P-A200-007CAS 62203-19-4
Active ingredientL-AsparagineCat. No. P-A200-008CAS 70-47-3
ImpurityN-alpha-(9-Fluorenylmethyloxycarbonyl)-N-beta-trityl-D-asparagineCat. No. P-A200-009CAS 180570-71-2Frequently 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.