Desloratadine Related Compound A CAS 117796-50-6
| CAS No. | 117796-50-6 |
| Molecular Formula | C19H19BrN2 |
| Molecular Weight | 355.27 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.
Desloratadine Related Compound A (CAS 117796-50-6) is a certified pharmaceutical impurity reference standard with the molecular formula C19H19BrN2 and a molecular weight of 355.27 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution, Desloratadine Related Compound A is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 355.27 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C19H19BrN2 |
| Molecular Weight | 355.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95.0% |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Desloratadine Standards
- Desloratadine impurity 66 (CAS CATO-C4X-143066)
- Desloratadine Impurity 28 (CAS CATO-C4X-143028)
- Desloratadine Impurity 64 (CAS CATO-C4X-143064)
- Desloratadine Impurity 65 (CAS CATO-C4X-143065)
- Desloratadine Impurity 9 (CAS 117796-52-8)
- Desloratadine Impurity 63 (CAS CATO-C4X-143063)
- Desloratadine Impurity 29 (CAS 79779-58-1)
- Iso Desloratadine Hydrochloride (CAS 432543-89-0)
Recommended Standards
- tert-butyl N-(4-bromo-7-fluoro-1,3-benzothiazol-2-yl)carbamate (CAS 2649788-82-7)
- 1-Cyclopropyl-3-(3,4-dichlorophenyl)-1-(2-(thiophen-2-yl)ethyl)urea (CAS 1396806-68-0)
- tert-Butyl 4-[(4-bromophenyl)amino]piperidine-1-carboxylate (CAS 443998-65-0)
- (S)-2-((S)-2-((S)-2-Amino-3-(phosphonooxy)propanamido)-3-methylbutanamido)propanoic acid (CAS 88169-77-1)
- Peramivir Impurity 70 (CAS 1988779-15-2)
- Dabigatran Impurity 54 (CAS 1643377-48-3)
- Apalutamide Impurity 57 (CAS CATO-C4X-274957)
- 2-(Tert-butoxycarbonyl)-6-fluoro-2-azaspiro[3.3]Heptane-6-carboxylic acid (CAS 2168111-53-1)
- 2-Iodopyrimidine-5-carbaldehyde (CAS 1461708-57-5)
- Pramipexole Impurity 43 (CAS 1001648-75-4)
- (3R,4S)-1-(tert-butoxycarbonyl)-4-(4-iodophenyl)pyrrolidine-3-carboxylate (CAS 1381948-05-5)
- (S)-Ethyl 2-amino-2-(5-chloro-1H-indol-3-yl)acetate hydrochloride (CAS 1384268-79-4)
- Ethyl 4-[6-(dimethylamino)-4-(trifluoromethyl)pyridin-2-yl]benzoate (CAS 1208081-76-8)
- Semaglutide impurity 93 (CAS CATO-C4X-222693)
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