Sodium Cromoglicate Impurity 13 CAS 53878-47-0
| CAS No. | 53878-47-0 |
| Molecular Formula | C10H6O5 |
| Molecular Weight | 206.15 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Sodium Cromoglicate Impurity 13 (CAS 53878-47-0) is a certified pharmaceutical impurity reference standard with the molecular formula C10H6O5 and a molecular weight of 206.15 g/mol.
Structurally, Sodium Cromoglicate Impurity 13 (C10H6O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 206.15 g/mol, it falls into the medium-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C10H6O5 |
| Molecular Weight | 206.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
Related Sodium Standards
- Sodium Cromoglicate Impurity 8 (CAS 16130-28-2)
- Sodium Cromoglicate Impurity 9 (CAS 3361-18-0)
- Sodium Cromoglicate Impurity 10 (CAS 50521-64-7)
- Sodium Cromoglicate Impurity C51 (CAS 16130-17-9)
- Sodium Cromoglicate Impurity 12 (CAS CATO-C4X-201112)
- Cromoglicate EP Impurity A (CAS 699-83-2)
- Sodium Cromoglicate Impurity 6 (CAS 802857-44-9)
- Sodium Cromoglicate Impurity 30 (CAS CATO-C4X-201130)
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