Levocetirizine Impurity 52 CAS CATO-C4X-108352
| CAS No. | CATO-C4X-108352 |
| Molecular Formula | C38H42Cl2N4O2 |
| Molecular Weight | 657.67 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Levocetirizine Impurity 52 (CAS CATO-C4X-108352), a pharmacopoeial impurity reference standard (molecular formula C38H42Cl2N4O2, MW 657.67 g/mol) used for the identification and quantification of trace impurities in APIs.
Levocetirizine Impurity 52 (C38H42Cl2N4O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; 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.
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 | C38H42Cl2N4O2 |
| Molecular Weight | 657.67 g/mol |
| Purity | >95% |
| 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) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Levocetirizine Standards
- Levocetirizine Lactose Ester (CAS CATO-C4X-108315)
- Levocetirizine Impurity 76 (CAS CATO-C4X-108376)
- Levocetirizine Impurity 81 (CAS CATO-C4X-108381)
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- Levocetirizine Impurity 73 (CAS CATO-C4X-108373)
- Levocetirizine Impurity 58 (CAS CATO-C4X-108358)
Recommended Standards
- tert-Butyl 4-((bis(2-((3-chlorobenzyl)(cyclopropyl)amino)-2-oxoethyl)amino)methyl)piperidine-1-carboxylate (CAS 1353979-86-8)
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- Upadacitinib Impurity 32 (CAS 2715120-88-8)
- N-(9-((2R,3R,4R,5R)-5-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-3-fluoro-4-hydroxytetrahydrofuran-2-yl)-6-oxo-6,9-dihydro-3H-purin-2-yl)isobutyramide (CAS 144089-96-3)
- Isavuconazole impurity 164 (CAS CATO-C4X-1236164)
- Gadobutrol Impurity 54 (CAS CATO-C4X-2120154)
- Adrenaline Impurity 27 (CAS CATO-C4X-184927)
- N-(4,6-Diphenylpyrimidin-2-yl)-4-methylbenzamide (CAS 820961-61-3)
- Propan-2-yl 5-(chloromethyl)furan-2-carboxylate (CAS 90416-47-0)
- 8-Bromo-2,3-dimethylquinazolin-4(3H)-one (CAS 1263413-81-5)
- 2,5,5-Trimethyl-2-phenylmorpholine (CAS 1017419-75-8)
- Ethyl 24-(tosyloxy)-3,8,11,14,17,20-hexaoxatetracosanoate (CAS 2681388-14-5)
- 3-Decylpentadecan-1-ol (CAS 1446438-69-2)
- Semaglutide impurity 54 (CAS CATO-C4X-222654)
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