Active ingredientArginineCat. No. P-A185-001CAS 74-79-3
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Stable isotope labelled · Arginine family
Pharmaceutical analytical standardArginine Impurity 2 Trifluoroacetate-d6
Synonyms: 5-[[Amino-[bis(trideuteriomethyl)amino]methylidene]amino]-2-oxopentanoic acid trifluoroacetate
- Cat. No.
- P-A185-005
- CAS
- N/A
- Alternative CAS
- 1419723-92-4 (free base)
- 107347-90-0 (unlabelled form, free base)
- Formula
- C8H9D6N3O3·C2HF3O2
- Molecular weight
- 321.28 g/mol
- Category
- Stable isotope labelled
Family: Arginine
A semi-essential protein amino acid: it is the sole precursor of nitric oxide, the molecule that widens blood vessels, and takes part in the urea cycle. It was isolated in 1886 by German chemist Ernst Schulze and his assistant Ernst Steiger, from lupin seedlings.
Did you know?Its name comes from the Greek árgyros, silver: crystals of its nitrate have a characteristic silvery-white appearance.
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 Arginine family
Active ingredientArginineCat. No. P-A185-001CAS 74-79-3
Active ingredientArginine HydrochlorideCat. No. P-A185-002CAS 1119-34-2
Pharmacopoeial impurityArginine EP Impurity BCat. No. P-A185-003CAS 372-75-8
Pharmacopoeial impurityArginine EP Impurity CCat. No. P-A185-004CAS 70-26-8
Isotopically labelledL-Arginine-13C-d4 HClCat. No. P-A185-006
Isotopically labelledL-Arginine-15N4-d7 HClCat. No. P-A185-007
Isotopically labelledL-Arginine-2,3,3,4,4,5,5-d7 HClCat. No. P-A185-008CAS 204244-77-9
Isotopically labelledNG,NG-Dimethyl-L-Arginine-13C5Cat. No. P-A185-009Frequently 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.