Ursodeoxycholic Acid Impurity N3 CAS 28083-34-3
| CAS No. | 28083-34-3 |
| Molecular Formula | C24H40O3 |
| Molecular Weight | 376.57 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ursodeoxycholic Acid Impurity N3.
As a process- or degradation-related impurity, Ursodeoxycholic Acid Impurity N3 (CAS 28083-34-3, C24H40O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Ursodeoxycholic Acid Impurity N3 (C24H40O3) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, 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.
As a certified reference material (CRM), Ursodeoxycholic Acid Impurity N3 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C24H40O3 |
| Molecular Weight | 376.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
Related Ursodeoxycholic Standards
- Ursodeoxycholic Acid impurity 100 (CAS CATO-C4X-1422100)
- Ursodeoxycholic Acid Impurity 123 (CAS 10601-78-2)
- Ursodeoxycholic Acid EP Impurity C (CAS 434-13-9)
- Ursodeoxycholic Acid Impurity 13 (CAS 5255-17-4)
- Ursodeoxycholic Acid impurity 106 (CAS CATO-C4X-1422106)
- Ursodeoxycholic Acid Impurity 68 (CAS 62797-60-8)
- Ursodeoxycholic Acid Impurity 21 (CAS 23848-46-6)
- Ursodeoxycholic Acid EP Impurity I (CAS 130593-75-8)
Recommended Standards
- PTA2 (Pinane thromboxane A2) (CAS 71111-01-8)
- Cholic Acid Impurity 24 (CAS 15173-22-5)
- Methyl p-hexadecyloxybenzoate (CAS 40654-35-1)
- 3,6,9,12-Tetraoxapentacosan-1-ol (CAS 930-08-5)
- Cyanocobalamin EP Impurity B (CAS 26264-28-8)
- Revefenacin Impurity 23 (CAS CATO-C4X-203123)
- Isotretinoin EP Impurity H (CAS 71748-58-8)
- 2'-Deoxyguanosine, 5'-triphosphate 93919-41-6 Deoxyguanosine triphosphate [[(2R,3S,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-3-hydroxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] phosphono hydrogen phosphate dGTP (CAS 93919-41-6)
- Ambroxol Impurity 93 (CAS CATO-C4X-108593)
- 1-Bromo-2-fluoro-4-nitro-5-(trifluoromethyl)benzene (CAS 1121586-27-3)
- (S)-2-((tert-Butoxycarbonyl)amino)-4-(2,3-dimethoxyphenyl)butanoic acid (CAS 1260607-48-4)
- Citenamide (CAS 10423-37-7)
- 4-Fluoro-2-(trifluoromethyl)pyridine (CAS 850246-04-7)
- Semaglutide impurity 96 (CAS CATO-C4X-222696)
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