Butylphthalide Impurity 47 CAS 380905-48-6
| CAS No. | 380905-48-6 |
| Molecular Formula | C12H16O3 |
| Molecular Weight | 208.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Butylphthalide Impurity 47 (CAS 380905-48-6) is a certified pharmaceutical impurity reference standard with the molecular formula C12H16O3 and a molecular weight of 208.25 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Butylphthalide Impurity 47 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 208.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Butylphthalide Impurity 47 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H16O3 |
| Molecular Weight | 208.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Butylphthalide Standards
- Butylphthalide Impurity 51 (CAS 17689-42-8)
- Butylphthalide Impurity N4 (CAS 168288-19-5)
- Butylphthalide Impurity 21 (CAS 152567-80-1)
- Butylphthalide Impurity 3 (CAS 550-37-8)
- Butylphthalide Impurity 38 (CAS 162050-43-3)
- Butylphthalide Impurity 52 (CAS 74459-23-7)
- Butylphthalide Impurity 6 (CAS 162050-42-2)
- Butylphthalide Impurity 24 (CAS 20871-32-3)
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