Active ingredientLevomefolateCat. No. P-L052-001CAS 31690-09-2
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Stable isotope labelled · Levomefolate family
Pharmaceutical analytical standardLevomefolate-13C-d3
Synonyms: Levomefolic Acid-13C,d3, Levomefolic Acid-13C-d3 (L-5-Methyltetrahydrofolic Acid-13C-d3)
- Cat. No.
- P-L052-002
- CAS
- 1356019-94-7
- Alternative CAS
- 31690-09-2 (unlabelled form)
- 1423663-76-6 (unlabelled form, sodium salt)
- 151533-22-1 (unlabelled form, calcium salt)
- 1429498-11-2 (unlabelled form, magnesium salt)
- 419563-18-1 (unlabelled form, calcium salt hydrate)
- 129025-21-4 (unlabelled form, calcium salt)
- Formula
- C19¹³CH22D3N7O6
- Molecular weight
- 463.47 g/mol
- Category
- Stable isotope labelled
Family: Levomefolate
Levomefolate (L-methylfolate) is the biologically active form of folate, vitamin B9: it donates a methyl group to homocysteine, turning it into methionine, and it is the form that circulates in the blood and crosses the blood-brain barrier. It is used as a supplement.
Did you know?The name folate comes from the Latin folium, leaf: in 1941 three researchers at the University of Texas isolated it for the first time from about four tonnes of spinach.
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 Levomefolate family
Active ingredientLevomefolateCat. No. P-L052-001CAS 31690-09-2
Isotopically labelledLevomefolate-d4Cat. No. P-L052-003
Isotopically labelledLevomefolate-d5Cat. No. P-L052-004
Active ingredientCalcium Levomefolate (L-5-Methyltetrahydrofolate Calcium Salt)Cat. No. P-L052-005CAS 151533-22-1
ImpurityLevomefolate Impurity 1Cat. No. P-L052-007Frequently 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.