Ethacridine Lactate E Impurity 5 CAS 20304-71-6
| CAS No. | 20304-71-6 |
| Molecular Formula | C21H16N2O4 |
| Molecular Weight | 360.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Ethacridine Lactate E Impurity 5 (CAS 20304-71-6, C21H16N2O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C21H16N2O4, Ethacridine Lactate E Impurity 5 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 360.36 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 | C21H16N2O4 |
| Molecular Weight | 360.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 2 |
Related Ethacridine Standards
- Ethacridine Lactate Impurity 24 (CAS CATO-C4X-260924)
- Ethacridine Lactate Impurity 20 (CAS 92159-34-7)
- Ethacridine Lactate Impurity 23 (CAS CATO-C4X-260923)
- Ethacridine Lactate Impurity 8 (CAS 328258-90-8)
- Ethacridine Lactate Impurity 25 (CAS CATO-C4X-260925)
- Ethacridine Lactate Impurity 28 (CAS CATO-C4X-260928)
- Ethacridine Lactate Impurity 36 (CAS CATO-C4X-260936)
- Ethacridine Lactate Impurity 12 (CAS 20304-69-2)
Recommended Standards
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