Dequalinium impurity 20 CAS CATO-C4X-193620
| CAS No. | CATO-C4X-193620 |
| Molecular Formula | C20H30ClN2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Dequalinium impurity 20 (CAS CATO-C4X-193620), a pharmacopoeial impurity reference standard (molecular formula C20H30ClN2Cl, MW 369.37 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C20H30ClN2Cl, Dequalinium impurity 20 contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 369.37 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C20H30ClN2 Cl |
| Molecular Weight | 369.37 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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
- Fluvoxamine Impurity 32 (CAS CATO-C4X-195132)
- Ceftopram lmpurity 45 (CAS CATO-C4X-135845)
- Doxorubicin Impurity 31 (CAS CATO-C4X-203331)
- 2-Iodo-4-(methylsulfonyl)phenol (CAS 20951-45-5)
- Cesium oxalate (CAS 1068-63-9)
- 3,4-Dimethyl-5-pentylisoxazole (CAS 136150-25-9)
- 4-Phenyl-1-(4-phenylbutyl)piperidine (CAS 136534-70-8)
- Methyl 2-bromo-3-cyano-5-(difluoromethyl)benzoate (CAS 1807029-93-1)
- 7-Fluoro-2,2-dimethyl-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 103362-10-3)
- Neuropeptide Y (18-36) (CAS 114495-97-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com