Butylphthalide Impurity 45 Potassium CAS 685886-82-2
| CAS No. | 685886-82-2 |
| Molecular Formula | C12H15O3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Butylphthalide Impurity 45 Potassium (CAS 685886-82-2), a pharmacopoeial impurity reference standard (molecular formula C12H15O3K, MW 246.35 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Butylphthalide Impurity 45 Potassium (C12H15O3K) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Butylphthalide Impurity 45 Potassium 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 | C12H15O3 K |
| Molecular Weight | 246.35 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) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
Related Butylphthalide Standards
- Butylphthalide Impurity 70 (CAS 102126-70-5)
- Butylphthalide Impurity 62 (CAS 102126-71-6)
- Butylphthalide Impurity 67 (CAS 102308-43-0)
- Butylphthalide Impurity 68 (CAS 105694-44-8)
- Butylphthalide Impurity 11 (CAS 111943-62-5)
- Butylphthalide Impurity 1 (CAS 119-67-5)
- Butylphthalide Impurity 60 (CAS 1225206-60-9)
- Butylphthalide Impurity 72 (CAS 1225206-61-0)
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- Abacavir Hydrochloride - API Standards (CAS 136777-48-5)
- Semaglutide Impurity 190 (CAS CATO-C4X-2226190)
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