Active ingredientBrotizolamCat. No. P-B125-001CAS 57801-81-7
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Pharmacopoeial impurity · Brotizolam family
Pharmaceutical analytical standardBrotizolam EP Impurity B
Synonyms: Desmethylbrotizolam
- Cat. No.
- P-B125-002
- CAS
- 57801-97-5
- Alternative CAS
- N/A
- Formula
- C14H8BrClN4S
- Molecular weight
- 379.66 g/mol
- Category
- Pharmacopoeial impurity (EP/USP)
Family: Brotizolam
A hypnotic of the thienotriazolodiazepine family, a close relative of the benzodiazepines: patented in 1974 and in medical use from 1984, it has been approved in several European countries, Italy included, and in Japan for the short-term treatment of severe insomnia.
Did you know?It also has a curious veterinary career: as an injectable solution it is used to stimulate appetite in cattle, for example during convalescence or after a change of feed.
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.
Pharmacopoeial standards available
The official European Pharmacopoeia standards for this molecule, supplied with EDQM documentation.
- Brotizolam impurity B CRSEP Y0000470
More products in the Brotizolam family
Active ingredientBrotizolamCat. No. P-B125-001CAS 57801-81-7Frequently 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.