Ketoprofen Impurity 93 CAS 2733641-85-3
| CAS No. | 2733641-85-3 |
| Molecular Formula | C20H23NO5 |
| Molecular Weight | 357.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ketoprofen Impurity 93 (CAS 2733641-85-3), a pharmacopoeial impurity reference standard (molecular formula C20H23NO5, MW 357.40 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C20H23NO5, Ketoprofen Impurity 93 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 357.40 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).
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.
As a certified reference material (CRM), Ketoprofen Impurity 93 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 | C20H23NO5 |
| Molecular Weight | 357.40 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Nitrogen Atoms | 1 |
Related Ketoprofen Standards
- Ketoprofen Impurity 116 (CAS 1777830-06-4)
- Ketoprofen Impurity 26 (CAS 1777829-91-0)
- Ketoprofen Impurity 60 (CAS 1777830-05-3)
- Ketoprofen Impurity 88 (CAS 1984110-22-6)
- Ketoprofen Impurity 94 (CAS CATO-C4X-147194)
- Ketoprofen Impurity 115 (CAS 72235-46-2)
- Ketoprofen 2-Ethylhexyl Ester (CAS CATO-C4X-147169)
- Ketoprofen Impurity 68 (CAS CATO-C4X-147168)
Recommended Standards
- Naltrexone Impurity 19 (CAS 112269-62-2)
- Naltrexone EP Impurity F (CAS 2397651-97-5)
- Naltrexone Impurity 61 (CAS CATO-C4X-147561)
- Mivacurium chloride Impurity 52 (CAS CATO-C4X-137552)
- Ketoprofen Impurity 73 (CAS CATO-C4X-147173)
- Palbociclib Impurity 144 (CAS CATO-C4X-1125144)
- Avermectin impurity 4 (CAS CATO-C4X-15524)
- 1-[(tert-Butoxy)methyl]-4-nitrobenzene (CAS 162954-42-9)
- N-Cyclobutylazetidin-3-amine; bis(trifluoroacetic acid) (CAS 2126176-83-6)
- 4,7-Dichloroisobenzofuran-1,3-dione (CAS 4466-59-5)
- 1236265-35-2 2-Amino-1-(4-benzyl-1-piperazinyl)-1-propanone hydrochloride 2907AD C14H22ClN3O (CAS 1236265-35-2)
- (4-(Decyloxy)phenyl)boronic acid (CAS 147222-99-9)
- 2-(3-Chlorothiophen-2-yl)-2-methylpropanoic acid (CAS 950604-74-7)
- Semaglutide impurity 93 (CAS CATO-C4X-222693)
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