Active ingredientBudesonideCat. No. P-B131-001CAS 51333-22-3
Drag to rotate
Pharmacopoeial impurity · Budesonide family
Pharmaceutical analytical standardBudesonide EP Impurity H (Mixture of Diastereomers)
Synonyms: 9,11-Anhydrobudesonide
- Cat. No.
- P-B131-013
- CAS
- 313474-58-7
- Alternative CAS
- N/A
- Formula
- C25H32O5
- Molecular weight
- 412.53 g/mol
- Category
- Pharmacopoeial impurity (EP/USP)
Family: Budesonide
A synthetic corticosteroid patented in 1973 and used for asthma since 1981. Today it is also used for COPD, allergic rhinitis and nasal polyps, Crohn's disease, colitis and, more recently, eosinophilic oesophagitis and IgA nephropathy.
Did you know?About 80-90% of a swallowed dose is broken down by the liver on its first pass: this is why oral forms act mainly locally, in the gut.
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 Budesonide family
Active ingredientBudesonideCat. No. P-B131-001CAS 51333-22-3
ImpurityBudesonide Sulfate Sodium (Mixture of Diastereomers)Cat. No. P-B131-002
Pharmacopoeial impurityBudesonide EP Impurity ACat. No. P-B131-003CAS 13951-70-7
Pharmacopoeial impurityBudesonide EP Impurity B (Mixture of Diastereomers)Cat. No. P-B131-004CAS 1040085-98-0
Pharmacopoeial impurity(22R)-BudesonideCat. No. P-B131-005CAS 51372-29-3
Pharmacopoeial impurity(22S)-BudesonideCat. No. P-B131-006CAS 51372-28-2
Pharmacopoeial impurityBudesonide EP Impurity CCat. No. P-B131-007CAS 1040085-99-1
Pharmacopoeial impurityBudesonide EP Impurity D (Mixture of Diastereomers)Cat. No. P-B131-008CAS 85234-63-5Frequently 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.