Dequalinium impurity 25 CAS CATO-C4X-193625
| CAS No. | CATO-C4X-193625 |
| Molecular Formula | C30H39N3O |
| Molecular Weight | N/A |
| 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 Dequalinium impurity 25.
Dequalinium impurity 25 (CAS CATO-C4X-193625) is a certified pharmaceutical impurity reference standard with the molecular formula C30H39N3OCl and a molecular weight of 493.11 g/mol.
The molecular framework of Dequalinium impurity 25 (C30H39N3OCl) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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.
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.
As a certified reference material (CRM), Dequalinium impurity 25 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 | C30H39N3O 2*Cl |
| Molecular Weight | 493.11 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dequalinium Standards
- Dequalinium 2*Chloride x*Hydrate (CAS 1255077-34-9)
- Dequalinium Impurity 15 (CAS 15821-13-3)
- Dequalinium Impurity 4 (CAS 16355-92-3)
- Dequalinium EP Impurity C trichloride (CAS 171980-50-0)
- Dequalinium Chloride EP Impurity B chloride (CAS 171980-52-2)
- Dequalinium Impurity 7 (CAS 19056-26-9)
- Dequalinium iodide (CAS 2019-42-3)
- Dequalinium impurity 18 (CAS 2377370-96-0)
Recommended Standards
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- 3-Cyclopropyl-2-(4-methoxyphenyl)-3-oxopropanenitrile (CAS 95664-79-2)
- 5-Fluoro-2-(4,4-difluoropiperidin-1-yl)benzaldehyde (CAS 1779130-80-1)
- 3-(Dimethylamino)-1-(pyrazin-2-yl)prop-2-en-1-one (CAS 111781-53-4)
- Methyl 1-(2-sulfamoylethyl)piperidine-4-carboxylate (CAS 1354952-68-3)
- N-(5-Chloro-2-methylphenyl)imidodicarbonimidic diamide (CAS 49872-65-3)
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