Levocetirizine Impurity 21 HCl CAS CATO-C4X-158221
| CAS No. | CATO-C4X-158221 |
| Molecular Formula | C24H31ClN2O4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 483.43 g/mol gives Levocetirizine Impurity 21 HCl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Levocetirizine Impurity 21 HCl (CAS CATO-C4X-158221), a pharmacopoeial impurity reference standard (molecular formula C24H31ClN2O4HCl, MW 483.43 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C24H31ClN2O4HCl, Levocetirizine Impurity 21 HCl contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 483.43 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).
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.
CATO manufactures Levocetirizine Impurity 21 HCl under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C24H31ClN2O4 HCl |
| Molecular Weight | 483.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Levocetirizine Standards
- Levocetirizine Impurity 50 (CAS 1074-42-6)
- Levocetirizine Impurity 5 (CAS 109036-15-9)
- Levocetirizine Impurity 43 (CAS 1116338-10-3)
- Levocetirizine Impurity 45 (CAS 1150310-68-1)
- Levocetirizine Dihydrochloride - Impurity H (Hydrochloride Salt) (CAS 1177093-13-8)
- Levocetirizine Impurity 24 (CAS 1232460-29-5)
- Levocetirizine Impurity 80 (CAS 1232460-31-9)
- Levocetirizine Impurity 17 (CAS 126517-38-2)
Recommended Standards
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- Urapidil Impurity 21 (CAS CATO-C4X-192421)
- 6-Amino-n-ethylpyridine-3-carboxamide (CAS 1248024-71-6)
- 2-(Dimethylamino)-3-phenylpropanoic acid (CAS 24268-81-3)
- (5-benzyl-6,7-dihydro-4H-furo[3,2-c]pyridin-2-yl)-tributyl-stannane (CAS 1438283-59-0)
- (S)-(S)-2-(((Benzyloxy)carbonyl)amino)-4-methylpentanoic hypofluorous anhydride (CAS 2171559-41-2)
- Semaglutide impurity 99 (CAS CATO-C4X-222699)
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