Ursodeoxycholic acid impurity 55 CAS CATO-C4X-142255
| CAS No. | CATO-C4X-142255 |
| Molecular Formula | C24H36O5 |
| Molecular Weight | 404.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Ursodeoxycholic acid impurity 55 (C24H36O5) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies Ursodeoxycholic acid impurity 55 (CAS CATO-C4X-142255), a pharmacopoeial impurity reference standard (molecular formula C24H36O5, MW 404.54 g/mol) used for the identification and quantification of trace impurities in APIs.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C24H36O5 |
| Molecular Weight | 404.54 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Ursodeoxycholic Standards
- Ursodeoxycholic acid impurity 63 (CAS 81873-91-8)
- Ursodeoxycholic Acid EP Impurity G (CAS 10538-55-3)
- Ursodeoxycholic Acid Impurity 113 (CAS CATO-C4X-1422113)
- Ursodeoxycholic Acid Impurity 132 (CAS CATO-C4X-1422132)
- Ursodeoxycholic Acid EP Impurity B (CAS 81-25-4)
- Ursodeoxycholic Acid EP Impurity D (CAS 2955-27-3)
- Ursodeoxycholic Acid-d5 (CAS 93701-18-9)
- Ursodeoxycholic Acid-d5 Methyl Ester (CAS 93701-19-0)
Recommended Standards
- 6,7-Diketolithocholic Acid (CAS 1643669-23-1)
- Finasteride Impurity 16 (CAS 116285-41-7)
- Simvastatin EP Impurity F (CAS 79952-44-6)
- Lovastatin Impurity 10 (CAS CATO-C4X-168410)
- Bucladesine Impurity 11 (CAS 21138-49-8)
- Diflunisal impurity 5 (CAS 53591-79-0)
- Prednisolone Impurity 16 (CAS CATO-C4X-173716)
- (5-Iodo-1-methyl-1H-pyrazol-4-yl)methanol (CAS 1871985-48-6)
- 3-((Dimethyl(3-(oxiran-2-ylmethoxy)propyl)silyl)oxy)-1,1,5,5-tetramethyl-1,5-bis(3-(oxiran-2-ylmethoxy)propyl)-3-phenyltrisiloxane (CAS 90393-83-2)
- 2-(2,6-Dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)acetic acid (CAS 4628-39-1)
- 4-Ethoxycarbonyl-3-fluorobenzeneboronic Acid (CAS 874288-38-7)
- tert-butyl 6-amino-6-methyl-1,4-oxazepane-4-carboxylate (CAS 2306265-25-6)
- 2-(4,4-Bis(4-methoxyphenyl)-2,5-dioxoimidazolidin-1-yl)-N-(1-cyanocyclohexyl)acetamide (CAS 878459-25-7)
- D-[Arg]30-Semaglutide (CAS CATO-C4X-222653)
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