Flurbiprofen Impurity 65 CAS CATO-C4X-144465
| CAS No. | CATO-C4X-144465 |
| Molecular Formula | C20H25NO8 |
| Molecular Weight | 407.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Flurbiprofen Impurity 65 (CAS CATO-C4X-144465), a pharmacopoeial impurity reference standard (molecular formula C20H25NO8, MW 407.41 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Flurbiprofen Impurity 65 (C20H25NO8) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 407.41 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C20H25NO8 |
| Molecular Weight | 407.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, 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 117 (CAS CATO-C4X-1444117)
- Flurbiprofen Impurity 114 (CAS CATO-C4X-1444114)
- Flurbiprofen Impurity 118 (CAS CATO-C4X-1444118)
- Flurbiprofen Impurity 69 (CAS CATO-C4X-144469)
- Flurbiprofen Impurity 168 (CAS CATO-C4X-1444168)
- Flurbiprofen Impurity 71 (CAS CATO-C4X-144471)
- Flurbiprofen Acyl-beta-D-glucuronide (Mixture of Diastereomers) (CAS 91683-37-3)
- Flurbiprofen Impurity 63 (CAS CATO-C4X-144463)
Recommended Standards
- Ezetimibe Impurity 72 (CAS CATO-C4X-109872)
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- 2-Bromo-1-(3,5-difluoro-4-methoxyphenyl)ethan-1-one (CAS 1098617-30-1)
- 2-(2-Chlorophenyl)-1-((4-methoxybenzyl)sulfonyl)propan-2-ol (CAS 339276-84-5)
- 1-(Oxan-4-ylmethyl)-3-phenyl-1H-pyrazol-5-amine (CAS 1448854-63-4)
- 5-ethyl-1H-pyrrole-2-carboxylic acid (CAS 630128-54-0)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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