Desloratadine Impurity 24 CAS CATO-C4X-143024
| CAS No. | CATO-C4X-143024 |
| Molecular Formula | C19H17ClN2O |
| Molecular Weight | 324.80 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Desloratadine Impurity 24 (C19H17ClN2O) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Desloratadine Impurity 24 (CAS CATO-C4X-143024) is a certified pharmaceutical impurity reference standard with the molecular formula C19H17ClN2O and a molecular weight of 324.80 g/mol.
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.
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 | C19H17ClN2O |
| Molecular Weight | 324.80 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Desloratadine Standards
- Desloratadine Impurity 25 (CAS CATO-C4X-143025)
- Desloratadine Impurity 30 (CAS 183198-48-3)
- Desloratadine Impurity 33 (CAS 38092-90-9)
- Desloratadine Impurity 35 (CAS 38092-88-5)
- Desloratadine Impurity 48 (CAS 119770-61-5)
- Desloratadine Impurity 16 (CAS 1346604-23-6)
- Desloratadine Impurity 17 (CAS 169253-26-3)
- Desloratadine Impurity 22 (CAS 119410-05-8)
Recommended Standards
- tert-Butyl 7-chloro-3H-spiro[furo[2,3-c]pyridine-2,4'-piperidine]-1'-carboxylate (CAS 2771352-45-3)
- tert-Butyl 4-[(3-chlorophenyl)carbonyl]piperazine-1-carboxylate (CAS 828299-83-8)
- Hydroxychloroquine Impurity 88 (CAS CATO-C4X-183588)
- Tert-butyl 4-(4-chlorobenzoyl)piperazine-1-carboxylate (CAS 897445-35-1)
- Ezetimibe Impurity 42 (CAS 189028-95-3)
- Oclacitinib Impurity 42 (CAS CATO-C4X-301842)
- Furacillin impurity 2 (CAS CATO-C4X-28052)
- Lotilaner Impurity 1 (CAS 1369853-98-4)
- 6-Chloro-5-methylpyridine-3-sulfonamide (CAS 37105-11-6)
- 4-(2-methyl-5-propyl-1H-pyrrol-1-yl)pyrazolo[1,5-a]pyridine-3-carboxylic acid (CAS 2530319-50-5)
- 2-(4-Benzoylphenyl)-2-(3,4-dimethoxyphenyl)acetonitrile (CAS 339012-86-1)
- (±)-Ractopamine-d6 Ketone HCl (1-methyl-d3-propyl-1,2,2-d3) (CAS 1185012-24-1)
- Ethyl 2-(4,6-Dichloro-5-pyrimidyl)acetate (CAS 1095822-21-1)
- [a-Glu](Side chain transposition)- Semaglutide (CAS CATO-C4X-2226111)
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