Ursodeoxycholic Acid EP Impurity I CAS 130593-75-8
| CAS No. | 130593-75-8 |
| Molecular Formula | C24H42O3 |
| Molecular Weight | 378.59 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Ursodeoxycholic Acid EP Impurity I (CAS 130593-75-8, C24H42O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Ursodeoxycholic Acid EP Impurity I (C24H42O3) 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 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).
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.
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 | C24H42O3 |
| Molecular Weight | 378.59 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
Related Ursodeoxycholic Standards
- Ursodeoxycholic Acid Impurity 21 (CAS 23848-46-6)
- Ursodeoxycholic Acid Impurity N3 (CAS 28083-34-3)
- 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)
Recommended Standards
- ethyl 11-(3,4-dimethyl-5-pentylfuran-2-yl)undecanoate (CAS 1133815-50-5)
- tert-Butyl 5-chloro-3-iodo-1H-indazole-1-carboxylate (CAS 2839736-48-8)
- ethyl 13-(3,4-dimethyl-5-propylfuran-2-yl)tridecanoate (CAS CATO-C4X-280646)
- Furan Fatty Acid F8 (CAS 57818-43-6)
- Perindopril Impurity 25 HCl (CAS 130982-52-4)
- Fluticasone Impurity N9 (CAS 3863-16-9)
- Naphazoline impurity 13 (CAS CATO-C4X-144013)
- 2-Hydrazinyl-4-methyl-4,5-dihydro-1H-imidazole dihydrochloride (CAS 57077-12-0)
- 3-Ethoxy-2,2-diethylcyclobutan-1-ol (CAS 1376341-23-9)
- 3-(1-Oxoisoindolin-2-yl)benzoic acid (CAS 4770-70-1)
- N-(3-Bromo-5-methylpyridin-2-yl)pivalamide (CAS 850014-30-1)
- Desacetyl Diltiazem D4 (CAS 112259-40-2)
- 4-[2-(2-Bromo-4-isopropylphenoxy)ethyl]piperidinehydrochloride (CAS 1219948-98-7)
- Semaglutide impurity 104(Fmoc-D-His-Aib) (CAS 2171211-18-8)
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