Doxylamine impurity 24 CAS CATO-C4X-178924
| CAS No. | CATO-C4X-178924 |
| Molecular Formula | C17H21BrN2O |
| Molecular Weight | 349.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Doxylamine impurity 24.
Doxylamine impurity 24 (CAS CATO-C4X-178924) is a certified pharmaceutical impurity reference standard with the molecular formula C17H21BrN2O and a molecular weight of 349.27 g/mol.
Based on its molecular formula C17H21BrN2O, Doxylamine impurity 24 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 349.27 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.
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 | C17H21BrN2O |
| Molecular Weight | 349.27 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Doxylamine Standards
- Doxylamine impurity 23 (CAS CATO-C4X-178923)
- Doxylamine Impurity 6 (CAS 105176-70-3)
- Doxylamine Impurity 5 (CAS 99430-77-0)
- Doxylamine Impurity 7 (CAS 97143-65-2)
- Doxylamine-d<SUB>5</SUB> (CAS 1173020-59-1)
- Doxylamine Impurity 15 (CAS CATO-C4X-178915)
- Doxylamine EP Impurity A (CAS 873407-01-3)
- Doxylamine Hydrogen Succinate EP Impurity A (CAS CATO-C4X-178921)
Recommended Standards
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