Loratadine Impurity 79 CAS CATO-C4X-142679
| CAS No. | CATO-C4X-142679 |
| Molecular Formula | C20H23BrN2O |
| Molecular Weight | 387.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Loratadine Impurity 79 (CAS CATO-C4X-142679) is a certified pharmaceutical impurity reference standard with the molecular formula C20H23BrN2O and a molecular weight of 387.31 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution, Loratadine Impurity 79 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 387.31 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 Loratadine Impurity 79 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 | C20H23BrN2O |
| Molecular Weight | 387.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Loratadine Standards
- Loratadine impurity 84 (CAS CATO-C4X-142684)
- Loratadine-d4 (CAS 381727-27-1)
- Loratadine-d5 (CAS 1020719-57-6)
- Loratadine-d5 (ethyl-d5) (CAS 1398065-63-8)
- Loratadine Impurity 5 (CAS 167891-69-2)
- Loratadine (CAS 79794-75-5)
- Loratadine EP Impurity E (CAS 170727-59-0)
- Loratadine EP Impurity 41 (CAS 169253-13-8)
Recommended Standards
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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