Benzalkonium Chloride impurity 9 CAS 180259-53-4
| CAS No. | 180259-53-4 |
| Molecular Formula | C21H36O |
| Molecular Weight | 304.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C21H36O, Benzalkonium Chloride impurity 9 contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 304.51 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a process- or degradation-related impurity, Benzalkonium Chloride impurity 9 (CAS 180259-53-4, C21H36O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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), Benzalkonium Chloride impurity 9 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 | C21H36O |
| Molecular Weight | 304.51 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2008 |
Related Benzalkonium Standards
- Benzalkonium Chloride impurity 7 (CAS 14727-68-5)
- Benzalkonium Chloride impurity 11 (CAS 45275-74-9)
- Benzalkonium Chloride impurity 10 (CAS 144266-45-5)
- Benzalkonium Chloride impurity 8 (CAS 39695-18-6)
- Benzalkonium Chloride Impurity 2 (CAS 112-69-6)
- Benzalkonium Chloride impurity 5 (CAS 41961-81-3)
- Benzalkonium Chloride EP Impurity C (CAS 100-44-7)
- Benzalkonium Chloride (CAS 8001-54-5)
Recommended Standards
- 4488-22-6 TL35MU1249 2,2'-Diamino-1,1'-dinaphthyl (1,1'-Binaphthalene)-2,2'-diamine 4-13-00-00489 (Beilstein Handbook Reference) 1,1'-Bi(2-naphthalenylamine) 1,1'-Bi(2-naphthylamine) BRN 2138401 NSC 519704 UNII-TL35MU1249 (CAS 4488-22-6)
- 3-Pentadecylphenol (CAS 501-24-6)
- 35423-91-7 N,N`-bis(1,4-DIMETHYLPENTYL)-p-PHENYLENEDIAMINE (CAS 35423-91-7)
- 6-Bromo-7-(2-chloroacetyl)-2h-benzo[b][1,4]oxazin-3(4h)-one (CAS 1094432-20-8)
- Imrecoxib Impurity 57 (CAS CATO-C4X-237957)
- Verapamil EP Impurity D (HCl salt) (CAS 36770-75-9)
- Prusogliptin Impurity 10 (CAS CATO-C4X-328410)
- Ethyl 2-(3-Pyrazolyl)acetate (CAS 82668-50-6)
- 2,6-Bis(2-(diethylamino)ethoxy)anthracene-9,10-dione (CAS 35697-33-7)
- 4-(1-Boc-3-azetidinyl)piperidine (CAS 1251006-64-0)
- N-[1-(aminomethyl)propyl]-N,N-dimethylamine dihydrochloride (CAS 859080-58-3)
- 2-Bromo-5-(methylsulfamoyl)benzoic acid (CAS 22361-62-2)
- EUK-134 (CAS 81065-76-1)
- [D-Ser6]-Semaglutide (CAS CATO-C4X-2226287)
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