Dequalinium Impurity 16 CAS CATO-C4X-193616
| CAS No. | CATO-C4X-193616 |
| Molecular Formula | C21H31IN2 |
| Molecular Weight | 438.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Dequalinium Impurity 16 (CAS CATO-C4X-193616) is a certified pharmaceutical impurity reference standard with the molecular formula C21H31IN2 and a molecular weight of 438.39 g/mol.
Dequalinium Impurity 16 (C21H31IN2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, iodine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), Dequalinium Impurity 16 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 | C21H31IN2 |
| Molecular Weight | 438.39 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
Related Dequalinium Standards
- Dequalinium Impurity 7 (CAS 19056-26-9)
- Dequalinium impurity 22 (CAS CATO-C4X-193622)
- Dequalinium Impurity 4 (CAS 16355-92-3)
- Dequalinium impurity 34 (CAS CATO-C4X-193634)
- Dequalinium Chloride (CAS 522-51-0)
- Dequalinium impurity 27 (CAS CATO-C4X-193627)
- Dequalinium impurity 18 (CAS 2377370-96-0)
- Dequalinium Impurity 10 (CAS CATO-C4X-193610)
Recommended Standards
- Diethyl 2,2'-(1,3,6,8-tetraoxo-1,3,6,8-tetrahydrobenzo[lmn][3,8]phenanthroline-2,7-diyl)diacetate (CAS 64005-90-9)
- (4Z)-2-{[(4-bromophenyl)carbamoyl]methyl}tetradec-4-enoic acid (CAS 1025274-31-0)
- 4-[3-(Trifluoromethyl)phenyl]-2-({[3-(trifluoromethyl)phenyl]methyl}sulfanyl)pyridine-3-carbonitrile (CAS 478245-79-3)
- 2-(3-Phenyl-1H-indole-2-carbonyl)-N-(3-(trifluoromethyl)phenyl)hydrazine-1-carboxamide (CAS 338415-08-0)
- Nimodipine Impurity 31 (CAS 62044-14-8)
- Tetrabenazine Impurity 68 (CAS CATO-C4X-274868)
- Isavuconazole Impurity 29 (CAS CATO-C4X-123629)
- 5-Bromo-2-(2-methoxy-ethyl)-2,3-dihydro-isoindol-1-one (CAS 1214900-60-3)
- 2-Amino-3-[2-(difluoromethyl)phenyl]propanoic acid (CAS 1270307-13-5)
- Tert-butyl ((5s,8s)-2-azaspiro[4.5]Decan-8-yl)carbamate (CAS 1609400-93-2)
- N-(3-(1H-tetrazol-1-yl)phenyl)acetamide (CAS 148866-34-6)
- 2,7-Dimethylquinoline-8-thiol (CAS 54128-50-6)
- 4-(2-Hydroxy-2-propyl)phenylboronic Acid Pinacol Ester (CAS 917397-93-4)
- Semaglutide impurity 30 (CAS CATO-C4X-222630)
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