Obeticholic Acid Impurity 48 CAS CATO-C4X-115348
| CAS No. | CATO-C4X-115348 |
| Molecular Formula | C32H58O4Si |
| Molecular Weight | 534.89 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 Obeticholic Acid Impurity 48.
As a process- or degradation-related impurity, Obeticholic Acid Impurity 48 (CAS CATO-C4X-115348, C32H58O4Si) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Obeticholic Acid Impurity 48 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 534.89 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).
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 | C32H58O4Si |
| Molecular Weight | 534.89 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| 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 |
Related Obeticholic Standards
- Obeticholic Acid Impurity 22 (CAS CATO-C4X-115322)
- Obeticholic Acid-d5 Sodium Salt (CAS CATO-C4X-115326)
- Obeticholic Acid Impurity 21 (CAS 863239-61-6)
- Obeticholic Acid Impurity 20 (CAS CATO-C4X-115320)
- Obeticholic Acid Impurity 19 (CAS 863239-60-5)
- Obeticholic Acid Impurity 43 (CAS CATO-C4X-115343)
- Obeticholic Acid Impurity 13 (CAS CATO-C4X-115323)
- Obeticholic Acid Impurity 41 (CAS CATO-C4X-115341)
Recommended Standards
- 10-Bromo-9-fluoro-2,3-diiodo-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine (CAS 1451084-94-8)
- Dibromotetrakis(pyridine)nickel (CAS 14129-04-5)
- 2,4,6-Triiodobenzenesulfonamide (CAS 1099632-52-6)
- [5-(4-Chlorobenzenesulfonyl)-1-methyl-3-phenyl-1H-pyrazol-4-yl]methyl 3-(trifluoromethyl)benzoate (CAS 318289-04-2)
- Clemastine Impurity 9 (CAS CATO-C4X-18379)
- Levocetirizine Impurity 78 (CAS CATO-C4X-108378)
- Semaglutide impurity 250 (CAS CATO-C4X-2226250)
- 1-(4-Acetyl-4-hydroxy-2-methyloctahydroquinolin-1(2H)-yl)-2-(dimethylamino)ethanone (CAS 65591-37-9)
- (2S)-2-[tert-butoxycarbonyl(methyl)amino]-4-fluoro-4-methyl-pentanoic acid (CAS 156047-44-8)
- 2-(Difluoromethyl)-3-fluoro-5-hydroxypyridine-6-methanol (CAS 1805432-34-1)
- 2-Pentenal, 3-hydroxy-4-oxo- (CAS 93376-50-2)
- Roxithromycin Impurity 24 (CAS CATO-C4X-130324)
- N-Cyclohexyl 4-bromo-3-methoxybenzamide (CAS 1072944-40-1)
- Semaglutide impurity 29 (CAS 110990-08-4)
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