Flurbiprofen Impurity 63 CAS CATO-C4X-144463
| CAS No. | CATO-C4X-144463 |
| Molecular Formula | C20H25NO7 |
| Molecular Weight | 391.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Flurbiprofen Impurity 63 (CAS CATO-C4X-144463), a pharmacopoeial impurity reference standard (molecular formula C20H25NO7, MW 391.42 g/mol) used for the identification and quantification of trace impurities in APIs.
Flurbiprofen Impurity 63 (C20H25NO7) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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.
Physical & Chemical Properties
| Molecular Formula | C20H25NO7 |
| Molecular Weight | 391.42 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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 |
| Nitrogen Atoms | 1 |
Related Flurbiprofen Standards
- Flurbiprofen Impurity 116 (CAS CATO-C4X-1444116)
- Flurbiprofen Impurity 20 (CAS CATO-C4X-144420)
- Flurbiprofen Impurity 22(Mixture of Diastereomers) (CAS CATO-C4X-144422)
- Flurbiprofen Impurity 28 (CAS CATO-C4X-144428)
- Flurbiprofen Impurity 56 (CAS CATO-C4X-144456)
- Flurbiprofen Impurity 75 (CAS CATO-C4X-144475)
- Flurbiprofen Impurity 76 (CAS CATO-C4X-144476)
- Flurbiprofen Impurity 17 (Mixture of Diastereomers) (CAS CATO-C4X-144477)
Recommended Standards
- Rivaroxaban Impurity 155 (CAS CATO-C4X-1090155)
- Icotinib (CAS 610798-31-7)
- Tadalafil Impurity 156 (CAS 378788-16-0)
- Finerenone Impurity 124 (CAS CATO-C4X-2880124)
- Axitinib Impurity 57 (CAS CATO-C4X-107157)
- Buserelin EP Impurity D (CAS CATO-C4X-22124)
- Varenicline Dioxo Impurity (CAS 357424-07-8)
- 2-Methoxy-N-(3-methoxybenzyl)ethan-1-amine (CAS 827327-99-1)
- 4-Oxo-N-(4-hydroxyphenyl)retinamide (CAS 865536-65-8)
- Ethyl 3-(o-tolyl)propanoate (CAS 104750-61-0)
- 4,4'-(Ethyne-1,2-diyl)diphthalic Anhydride (purified by sublimation) (CAS 129808-00-0)
- 3,3-Dimethyl-1-phenoxybutan-2-one (CAS 39199-22-9)
- 1-ethyl-n-(1-methoxypropan-2-yl)piperidin-4-amine (CAS 415968-93-3)
- Semaglutide Impurity 123 (CAS 71997-93-8)
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