Butylphthalide Impurity 24 CAS 20871-32-3
| CAS No. | 20871-32-3 |
| Molecular Formula | C12H15NO2 |
| Molecular Weight | 205.25 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 24.
Butylphthalide Impurity 24 (CAS 20871-32-3) is a certified pharmaceutical impurity reference standard with the molecular formula C12H15NO2 and a molecular weight of 205.25 g/mol.
Structurally, Butylphthalide Impurity 24 (C12H15NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 205.25 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.
CATO manufactures Butylphthalide Impurity 24 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 | C12H15NO2 |
| Molecular Weight | 205.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Related Butylphthalide Standards
- Butylphthalide Impurity N4 (CAS 168288-19-5)
- Butylphthalide Impurity 11 (CAS 111943-62-5)
- 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 40 (CAS 1485081-46-6)
Recommended Standards
- Dexpanthenol (CAS 81-13-0)
- Benazepril Impurity 14 (CAS CATO-C4X-209614)
- Dexpanthenol Racemate (CAS 16485-10-2)
- Epalrestat Impurity 19 (CAS 149789-77-5)
- Empagliflozin impurity 263 (CAS CATO-C4X-1065263)
- Blonanserin Impurity 17 (CAS 132812-72-7)
- Parecoxib sodium Impurity 17 (CAS 451-40-1)
- 4-(2-Bromo-9-(4-(tert-butyl)phenyl)-9H-fluoren-9-yl)phenol (CAS 849222-40-8)
- Vinylboronic acid (CAS 4363-34-2)
- 1-Methyl-2-(pyrrolidin-3-yl)-1H-benzo[d]imidazole (CAS 1257521-25-7)
- 3-Methoxy-2-methylaniline hydrochloride (CAS 857195-15-4)
- S-Hydroprene (CAS 65733-18-8)
- trans-2-Chlorocyclopentanol (CAS 20377-80-4)
- Hexapeptide-9 (CAS 885024-94-2)
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