Cholic Aicd Impurity 17 CAS 2304-91-8
| CAS No. | 2304-91-8 |
| Molecular Formula | C24H36O5 |
| Molecular Weight | 404.54 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.
CATO supplies Cholic Aicd Impurity 17 (CAS 2304-91-8), a pharmacopoeial impurity reference standard (molecular formula C24H36O5, MW 404.54 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Cholic Aicd Impurity 17 (C24H36O5) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), Cholic Aicd Impurity 17 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 | C24H36O5 |
| Molecular Weight | 404.54 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Cholic Standards
- Cholic Acid Impurity 13 (CAS 2304-92-9)
- Cholic Acid Impurity 18 (CAS 517-33-9)
- Cholic Acid Impurity 27 (CAS CATO-C4X-116027)
- Cholic Acid Impurity 28 (CAS CATO-C4X-116028)
- Cholic Acid Impurity 52 (CAS 68170-81-0)
- Cholic Acid impurity 75 (CAS 2862-62-6)
- Cholic Acid Impurity 19 (CAS 2304-89-4)
- Cholic Acid Impurity 78 (CAS 79732-73-3)
Recommended Standards
- Oxazole, 2,2′-[(1S)-6,6′-dimethyl[1,1′-biphenyl]-2,2′-diyl]bis[4,5-dihydro-4-(1-methylethyl)-, (4S,4′S)- (CAS 209003-59-8)
- Simvastatin EP Impurity E (CAS 75330-75-5)
- Oxazole, 2,2′-[(1R)-6,6′-dimethyl[1,1′-biphenyl]-2,2′-diyl]bis[4,5-dihydro-4-(1-methylethyl)-, (4S,4′S)- (CAS 209072-61-7)
- Simvastatin EP Impurity F (CAS 79952-44-6)
- Ilaprazole Impurity 108 (CAS CATO-C4X-1130108)
- Carebastine Impurity 7 (CAS CATO-C4X-31697)
- Ibrutinib Impurity 20 (CAS 936563-92-7)
- tert-butyl (6-(cyanomethyl)benzo[d]thiazol-2-yl)carbamate (CAS 1440526-50-0)
- Thromboxane B2 (CAS 54397-85-2)
- N'-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]ethoxycarbohydrazide (CAS 287979-04-8)
- 3-(1H-PYrazol-1-ylmethyl)piperidine dihydrochloride (CAS 1984136-46-0)
- H-D-Phe-OMe · HCl (CAS 13033-84-6)
- 1189470-76-5 4-[N-(Methyl-d3)amino]-4-(3-pyridyl)butane-1-ol (CAS 1189470-76-5)
- Peptide 74 (H-8545.0500) (CAS 132116-39-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com