Cholic Acid Impurity 20 CAS 24637-46-5
| CAS No. | 24637-46-5 |
| Molecular Formula | C24H38O4 |
| Molecular Weight | 390.56 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Cholic Acid Impurity 20 (C24H38O4) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 390.56 g/mol, it falls into the moderately-high-molecular-weight range. 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 Cholic Acid Impurity 20 (CAS 24637-46-5), a pharmacopoeial impurity reference standard (molecular formula C24H38O4, MW 390.56 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
CATO manufactures Cholic Acid Impurity 20 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C24H38O4 |
| Molecular Weight | 390.56 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, 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.) | 1964 |
Related Cholic Standards
- Cholic Acid Impurity 14 (CAS CATO-C4X-116014)
- Cholic Acid Impurity 36 (CAS 24637-45-4)
- Cholic Acid Impurity 45 (CAS 63266-92-2)
- Cholic Acid Impurity 51 (CAS 146340-08-1)
- Cholic Acid Impurity 9 (CAS 5130-29-0)
- Cholic Acid Impurity 29 (CAS 2024612-46-0)
- Cholic acid Impurity 10 (CAS 570-62-7)
- Cholic acid Impurity 11 (CAS 84848-09-9)
Recommended Standards
- Obeticholic Acid Impurity 14 (CAS CATO-C4X-115314)
- 3-Oxo-12α-hydroxy-5β-cholanoic Acid (CAS 4185-01-7)
- Apocholic acid (CAS 641-81-6)
- CAS 2410280-03-2 (CAS 2410280-03-2)
- Bisnorlipoic Impurity N1 (CAS 13125-44-5)
- Creatine impurity 19 (CAS CATO-C4X-120919)
- Propranolol EP Impurity B (CAS 83314-78-7)
- Vortioxetine Impurity 139 (CAS CATO-C4X-1056139)
- Ethyl 3-(1,4-dioxo-3,4-dihydrophthalazin-2(1H)-yl)propanoate (CAS 22418-98-0)
- tert-Butyl (S)-piperidine-2-carboxylate hydrochloride (CAS 145064-67-1)
- 2-fluoro-3-(pyridin-3-yl)prop-2-enoic acid hydrochloride (CAS 1807920-24-6)
- Tert-butyl((1s,3s)-3-ethynylcyclobutoxy)dimethylsilane (CAS 2427587-07-1)
- 3-phenyl-1H-1,2,4-triazole (CAS 3357-42-4)
- Gastric Inhibitory Polypeptide (1-30) amide (porcine) (CAS 134846-93-8)
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