Fenbufen impurity 7 CAS CATO-C4X-19397
| CAS No. | CATO-C4X-19397 |
| Molecular Formula | C13H10O2 |
| Molecular Weight | 198.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Fenbufen impurity 7 (CAS CATO-C4X-19397), a pharmacopoeial impurity reference standard (molecular formula C13H10O2, MW 198.22 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C13H10O2, Fenbufen impurity 7 contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 198.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
As a certified reference material (CRM), Fenbufen impurity 7 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 | C13H10O2 |
| Molecular Weight | 198.22 g/mol |
| Appearance | Pale yellow to 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Fenbufen Standards
- Fenbufen EP Impurity A (CAS 17589-68-3)
- Fenbufen 4-Chlorophenyl Butanoic Acid (CAS 3984-34-7)
- Fenbufen Impurity 9 (CAS 644-90-6)
- Fenbufen Impurity 2 (Fenbufen EP Impurity B) (CAS 34682-12-7)
- Fenbufen EP Impurity B (CAS CATO-C4X-19392)
- Fenbufen (CAS 36330-85-5)
- Fenbufen-d9 (CAS 1189940-96-2)
- Fenbufen Methyl Ester (CAS 54011-27-7)
Recommended Standards
- Trimetazidine EP Impurity D (CAS 71989-96-3)
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- Carteolol Impurity 37 (CAS CATO-C4X-228737)
- Olopatadine Impurity 23 (CAS 4174-83-8)
- 2,4,5-Trichlorophenyl diethylphosphinothioate (CAS 5745-14-2)
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- Ethyl 5-fluoro-6-methylpicolinate (CAS 1803793-15-8)
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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
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com