Cholic Acid Impurity 13 CAS 2304-92-9
| CAS No. | 2304-92-9 |
| Molecular Formula | C24H36O5 |
| Molecular Weight | 404.54 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 Cholic Acid Impurity 13.
Cholic Acid Impurity 13 (CAS 2304-92-9) is a certified pharmaceutical impurity reference standard with the molecular formula C24H36O5 and a molecular weight of 404.54 g/mol.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, Cholic Acid Impurity 13 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 404.54 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Cholic Acid Impurity 13 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 Aicd Impurity 17 (CAS 2304-91-8)
- 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)
- 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)
- Eliglustat (CAS 491833-29-5)
- Simvastatin EP Impurity E (CAS 75330-75-5)
- Fluvoxamine Impurity 28 (CAS CATO-C4X-195128)
- Cefixime Impurity 80 (CAS CATO-C4X-113980)
- Letermovir Impurity 82 (CAS CATO-C4X-291582)
- 2-([(4-fluorophenyl)sulfonyl]amino)-2-phenylacetic acid (CAS 250714-71-7)
- 2-(Trifluoromethyl)-7,8-dihydroquinazolin-6(5H)-one (CAS 944902-21-0)
- 2-(4-Hydroxybutyl)cyclopentan-1-one (CAS 91240-72-1)
- 4-(Methoxymethyl)-4-methylpiperidine (CAS 774224-63-4)
- (E)-3-(1H-Pyrrol-3-yl)acrylic acid (CAS 85310-57-2)
- Methyl 5-formyl-2-methoxybenzoate (CAS 78515-16-9)
- Semaglutide impurity 32 (CAS CATO-C4X-222632)
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