Obeticholic Acid Impurity 5 CAS 915038-26-5
| CAS No. | 915038-26-5 |
| Molecular Formula | C26H42O4 |
| Molecular Weight | 418.61 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a process- or degradation-related impurity, Obeticholic Acid Impurity 5 (CAS 915038-26-5, C26H42O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a steroid core, a hydroxyl group, an ether linkage, Obeticholic Acid Impurity 5 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 418.61 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), Obeticholic Acid Impurity 5 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 | C26H42O4 |
| Molecular Weight | 418.61 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
Related Obeticholic Standards
- Obeticholic Acid Impurity 12 (CAS 1885104-64-2)
- Obeticholic Acid Impurity 33 (CAS 1908444-27-8)
- Obeticholic Acid Impurity 34 (CAS CATO-C4X-115334)
- Obeticholic Acid Impurity 4 (CAS 1947343-07-8)
- Obeticholic Acid Impurity 52 (CAS CATO-C4X-115352)
- Obeticholic Acid Impurity 6 (CAS 915038-25-4)
- Obeticholic Acid (CAS 459789-99-2)
- Obeticholic Acid Impurity 1 (CAS 865244-30-0)
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