Active ingredientAspartic AcidCat. No. P-A201-001CAS 56-84-8
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Impurity or related compound · Aspartic Acid family
Pharmaceutical analytical standardL-Aspartate-Cytarabine
- Cat. No.
- P-A201-014
- CAS
- N/A
- Alternative CAS
- N/A
- Formula
- C13H18N4O8
- Molecular weight
- 358.31 g/mol
- Category
- Impurity or related compound
Family: Aspartic Acid
A non-essential amino acid that builds proteins and takes part in the urea cycle and in glucose production; in the brain it stimulates NMDA receptors, being the "A" in their name (N-methyl-D-aspartate).
Did you know?It was obtained in 1827 by Plisson and Henry from asparagine, which had been isolated in 1806 from asparagus juice: hence the name. Today it is also one of the two building blocks of the sweetener aspartame.
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 Aspartic Acid family
Active ingredientAspartic AcidCat. No. P-A201-001CAS 56-84-8
Isotopically labelledAspartic-2-13C-15N AcidCat. No. P-A201-002CAS 98532-13-9
Isotopically labelledIndole 3-Aspartate-d7Cat. No. P-A201-003
Isotopically labelledL-Aspartic-1,4-13C2 AcidCat. No. P-A201-005CAS 101247-29-4
Isotopically labelledL-Aspartic-2,3,3-d3 AcidCat. No. P-A201-006CAS 3842-25-9
Impurity3-Fluoroaspartic AcidCat. No. P-A201-007CAS 67866-76-6
Impuritybeta-Aspartyl-Aspartic AcidCat. No. P-A201-008CAS 60079-22-3
ImpurityD-a-Aspartyl-D-Aspartic AcidCat. No. P-A201-009CAS 1242013-52-0Frequently 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.