Pyridoxine Impurity 21 CAS 96181-47-4
| CAS No. | 96181-47-4 |
| Molecular Formula | C12H15NO6 |
| Molecular Weight | 269.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C12H15NO6, Pyridoxine Impurity 21 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 269.25 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).
Pyridoxine Impurity 21 (CAS 96181-47-4) is a certified pharmaceutical impurity reference standard with the molecular formula C12H15NO6 and a molecular weight of 269.25 g/mol.
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 | C12H15NO6 |
| Molecular Weight | 269.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 1 |
Related Pyridoxine Standards
- Pyridoxine Impurity 6 (CAS 1385767-85-0)
- Pyridoxine /Vitamin B6 Impurity C93 (CAS 5223-10-9)
- Pyridoxine impurity 4 (CAS 913696-26-1)
- Pyridoxine Diacetate (CAS 26280-83-1)
- Pyridoxine impurity 68 (CAS 4943-90-2)
- Pyridoxine impurity 88 (CAS CATO-C4X-187788)
- Pyridoxine Impurity 53 (CAS CATO-C4X-187753)
- Pyridoxine Impurity 81 (CAS CATO-C4X-187781)
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