Ursodeoxycholic Acid impurity 83 CAS 21066-20-6
| CAS No. | 21066-20-6 |
| Molecular Formula | C29H44O7 |
| Molecular Weight | 504.66 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Ursodeoxycholic Acid impurity 83 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
As a process- or degradation-related impurity, Ursodeoxycholic Acid impurity 83 (CAS 21066-20-6, C29H44O7) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Ursodeoxycholic Acid impurity 83 (C29H44O7) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C29H44O7 |
| Molecular Weight | 504.66 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
Related Ursodeoxycholic Standards
- Ursodeoxycholic Acid impurity 101 (CAS CATO-C4X-1422101)
- Ursodeoxycholic Acid Impurity 120 (CAS CATO-C4X-1422120)
- Ursodeoxycholic Acid impurity 78 (CAS CATO-C4X-142278)
- Ursodeoxycholic Acid impurity 86 (CAS CATO-C4X-142286)
- Ursodeoxycholic Acid impurity 87 (CAS CATO-C4X-142287)
- Ursodeoxycholic acid impurity 52 (CAS 517-37-3)
- Ursodeoxycholic Acid Impurity 122 (CAS CATO-C4X-1422122)
- Ursodeoxycholic acid impurity 29 (CAS CATO-C4X-142229)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com