Active ingredientBiotinCat. No. P-B084-001CAS 58-85-5
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Impurity or related compound · Biotin family
Pharmaceutical analytical standardDibenzylbiotin
Synonyms: Biotin Impurity 22, n,n'-dibenzylbiotin
- Cat. No.
- P-B084-059
- CAS
- 33607-60-2
- Alternative CAS
- N/A
- Formula
- C24H28N2O3S
- Molecular weight
- 424.56 g/mol
- Category
- Impurity or related compound
Family: Biotin
A water-soluble B vitamin (B7, also called vitamin H from the German Haut, skin): it is the prosthetic group of the carboxylases, key enzymes in the metabolism of fats, sugars and amino acids.
Did you know?In 1936 Fritz Kögl and Benno Tönnis first isolated just 1.1 mg of it from 250 kg of dried egg yolk. Avidin in raw egg white, on the other hand, binds it and blocks its absorption.
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.
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Pharmacopoeial impurityBiotin EP Impurity FCat. No. P-B084-010CAS 101469-35-6Frequently 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.