Active ingredientRiboflavinCat. No. P-R050-001CAS 83-88-5
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Impurity or related compound · Riboflavin family
Pharmaceutical analytical standardRiboflavin Impurity 2
Synonyms: 6,7-Dimethyl-3-oxo-4-[(2S,3S,4R)-2,3,4,5-tetrahydroxypentyl]quinoxaline-2-carboxylic acid
- Cat. No.
- P-R050-016
- CAS
- 64480-68-8
- Alternative CAS
- N/A
- Formula
- C16H20N2O7
- Molecular weight
- 352.34 g/mol
- Category
- Impurity or related compound
Family: Riboflavin
This is vitamin B2: water-soluble, it is the starting point of the coenzymes FMN and FAD, which cells need to obtain energy from sugars, fats and proteins. It was first isolated in 1879 from milk whey, under the name lactochrome.
Did you know?Its name combines ribose and the Latin flavus, yellow: it is a yellow-orange powder that gives off a greenish-yellow fluorescence in solution, and it is also used as a food colouring (E101).
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 Riboflavin family
Active ingredientRiboflavinCat. No. P-R050-001CAS 83-88-5
Active ingredientRiboflavin Sodium PhosphateCat. No. P-R050-002CAS 130-40-5
Pharmacopoeial impurityRiboflavin EP Impurity ACat. No. P-R050-003CAS 1088-56-8
Pharmacopoeial impurityRiboflavin EP Impurity BCat. No. P-R050-004CAS 1086-80-2
Pharmacopoeial impurityRiboflavin EP Impurity CCat. No. P-R050-005CAS 2535-20-8
Pharmacopoeial impurityRiboflavin EP Impurity DCat. No. P-R050-006CAS 52134-62-0
Pharmacopoeial impurityRiboflavin Sodium Phosphate EP Impurity ACat. No. P-R050-007CAS 86108-27-2
Pharmacopoeial impurityRiboflavin Sodium Phosphate EP Impurity BCat. No. P-R050-008CAS 86108-26-1Frequently 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.