Flurbiprofen Impurity 164 CAS 52806-83-4
| CAS No. | 52806-83-4 |
| Molecular Formula | C15H14O4 |
| Molecular Weight | 258.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
CATO supplies Flurbiprofen Impurity 164 (CAS 52806-83-4), a pharmacopoeial impurity reference standard (molecular formula C15H14O4, MW 258.27 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C15H14O4, Flurbiprofen Impurity 164 contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 258.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C15H14O4 |
| Molecular Weight | 258.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| CAS Registry Year (est.) | 1972 |
Related Flurbiprofen Standards
- Flurbiprofen Impurity 24 (CAS 66202-86-6)
- Flurbiprofen Impurity 171 (CAS CATO-C4X-1444171)
- Flurbiprofen Impurity 16 (CAS 52807-12-2)
- Flurbiprofen EP Impurity C (CAS 61466-95-3)
- Flurbiprofen impurity 123 (CAS CATO-C4X-1444123)
- Flurbiprofen Impurity 59 (CAS CATO-C4X-144459)
- Flurbiprofen Impurity 73 (CAS CATO-C4X-144473)
- Flurbiprofen Impurity 27 (CAS 136649-30-4)
Recommended Standards
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- Mirogabalin Impurity 214 (CAS CATO-C4X-2924214)
- Vonoprazan Impurity 187 (CAS 2067322-23-8)
- 2-Bromo-5-(difluoromethyl)-4-iodo-3-methylpyridine (CAS 1804846-55-6)
- 2-(3-Fluoro-5-(trifluoromethyl)pyridin-2-yl)-2,6-diazaspiro[3.3]Heptane (CAS 2306275-79-4)
- 6-(3-Methoxyphenyl)pyridazin-3-ol (CAS 76970-15-5)
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- Des-Gly34-Tirzepatide (CAS CATO-CPTD788940)
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