Active ingredientUrsodeoxycholic AcidCat. No. P-U014-001CAS 128-13-2
Drag to rotate
Impurity or related compound · Ursodeoxycholic Acid family
Pharmaceutical analytical standardUrsodeoxycholic Acid Ethyl Ester
Synonyms: Ethyl ursodeoxycholate
- Cat. No.
- P-U014-018
- CAS
- 69519-36-4
- Alternative CAS
- N/A
- Formula
- C26H44O4
- Molecular weight
- 420.63 g/mol
- Category
- Impurity or related compound
Family: Ursodeoxycholic Acid
A natural bile acid, also present in small amounts in human bile: since the mid-1970s it has been used to dissolve cholesterol gallstones, and since the late 1980s for primary biliary cholangitis.
Did you know?Its name comes from the Latin ursus, bear: in 1902 the Swede Olof Hammarsten found it in polar bear bile, while bear bile had been used for centuries in Chinese medicine.
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 Ursodeoxycholic Acid family
Active ingredientUrsodeoxycholic AcidCat. No. P-U014-001CAS 128-13-2
Active ingredientUrsodeoxycholic Acid Sodium SaltCat. No. P-U014-002CAS 2898-95-5
Pharmacopoeial impurityUrsodeoxycholic acid EP Impurity JCat. No. P-U014-003CAS 4185-00-6
Pharmacopoeial impurityUrsodeoxycholic Acid EP Impurity CCat. No. P-U014-005CAS 434-13-9
Pharmacopoeial impurityUrsodeoxycholic Acid EP Impurity FCat. No. P-U014-006CAS 4651-67-6
Pharmacopoeial impurityUrsodeoxycholic Acid EP Impurity ICat. No. P-U014-007CAS 130593-75-8
Pharmacopoeial impurityUrsodeoxycholic Acid EP Impurity HCat. No. P-U014-008CAS 78919-26-3
Isotopically labelledGlycoursodeoxycholic-2,2,4,4-d4 AcidCat. No. P-U014-009CAS 2044276-17-5Frequently 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.