Obeticholic Acid Impurity 15 CAS 10538-59-7
| CAS No. | 10538-59-7 |
| Molecular Formula | C25H40O4 |
| Molecular Weight | 404.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Obeticholic Acid Impurity 15 (C25H40O4) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO supplies Obeticholic Acid Impurity 15 (CAS 10538-59-7), a pharmacopoeial impurity reference standard (molecular formula C25H40O4, MW 404.58 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
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 | C25H40O4 |
| Molecular Weight | 404.58 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.) | 1960 |
Related Obeticholic Standards
- Obeticholic Acid Impurity 32 (CAS CATO-C4X-115332)
- Obeticholic Acid Impurity 35 (CAS CATO-C4X-115335)
- Obeticholic Acid Impurity 47 (CAS CATO-C4X-115347)
- Obeticholic Acid Impurity 49 (CAS 2410049-27-1)
- Obeticholic Acid Impurity 13 (CAS 1537866-49-1)
- Obeticholic Acid Impurity 10 (CAS CATO-C4X-115310)
- Obeticholic Acid Impurity 11 (CAS CATO-C4X-115311)
- Obeticholic Acid Impurity 16 (CAS CATO-C4X-115316)
Recommended Standards
- Methyl 7-β-Hydroxy-3-ketocholanoate (CAS 67371-28-2)
- Cholic Acid Impurity 27 (CAS CATO-C4X-116027)
- Hexadecyl β-d-glucopyranoside, 98% (CAS 54549-27-8)
- Cholic Acid Impurity 28 (CAS CATO-C4X-116028)
- Efinaconazole impurity 45 (CAS CATO-C4X-124345)
- Adenosine Impurity 1 (CAS CATO-C4X-24191)
- Upadacitinib Impurity 8 (CAS CATO-C4X-24058)
- rel-(2S,3S)-3-(tert-Butyl)-4-(2,6-dimethoxyphenyl)-2-methyl-2,3-dihydrobenzo[d][1,3]oxaphosphole (CAS 1292310-20-3)
- Methyl 3-(3-cyanophenyl)benzoate (CAS 168619-12-3)
- 5-ethyl-4-methylthiophene-2-carboxylic acid (CAS 40808-25-1)
- 2-(4-Carbamoylpiperazin-1-yl)acetic acid (CAS 701291-01-2)
- 2-(Allylsulfonyl)-6-methylpyridine (CAS 2249891-86-7)
- 3-(tetrahydro-2h-pyran-2-yloxy)pregn-5-en-20-one (CAS 35961-41-2)
- Semaglutide impurity 204 (CAS CATO-C4X-2226204)
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