Butylphthalide Impurity 16 CAS 577-56-0
| CAS No. | 577-56-0 |
| Molecular Formula | C9H8O3 |
| Molecular Weight | 164.16 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 Butylphthalide Impurity 16.
Butylphthalide Impurity 16 (CAS 577-56-0) is a certified pharmaceutical impurity reference standard with the molecular formula C9H8O3 and a molecular weight of 164.16 g/mol.
Butylphthalide Impurity 16 (C9H8O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures Butylphthalide Impurity 16 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H8O3 |
| Molecular Weight | 164.16 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Butylphthalide Standards
- Butylphthalide Impurity 30 (CAS 17475-41-1)
- Butylphthalide Impurity 14 (CAS 61658-90-0)
- Butylphthalide Impurity C165 (CAS 4767-54-8)
- Butylphthalide Impurity 19 (CAS 17369-59-4)
- Butylphthalide Impurity 5 (CAS 612-20-4)
- Butylphthalide Impurity 54 (CAS 72424-08-9)
- Butylphthalide Impurity N3 (CAS 64002-57-9)
- Butylphthalide Impurity 12 (CAS 2360-45-4)
Recommended Standards
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com