Ketoprofen Impurity 77 CAS 2098704-07-3
| CAS No. | 2098704-07-3 |
| Molecular Formula | C26H32O3 |
| Molecular Weight | 392.53 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Ketoprofen Impurity 77 (C26H32O3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 392.53 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Ketoprofen Impurity 77 (CAS 2098704-07-3) is a certified pharmaceutical impurity reference standard with the molecular formula C26H32O3 and a molecular weight of 392.53 g/mol.
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.
As a certified reference material (CRM), Ketoprofen Impurity 77 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 | C26H32O3 |
| Molecular Weight | 392.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
Related Ketoprofen Standards
- Ketoprofen Impurity 29 (CAS CATO-C4X-147129)
- Ketoprofen Impurity 71 (CAS 1853132-06-5)
- Ketoprofen Impurity 99 (CAS CATO-C4X-147199)
- Ketoprofen 1,4-Sorbitol Ester (CAS CATO-C4X-147118)
- Ketoprofen Impurity 68 (CAS CATO-C4X-147168)
- Ketoprofen Impurity 50 (CAS 157740-16-4)
- Ketoprofen 2-Ethylhexyl Ester (CAS CATO-C4X-147169)
- Ketoprofen Impurity 57 (CAS CATO-C4X-147157)
Recommended Standards
- Levonorgestrel Impurity 36 (CAS 2762739-30-8)
- Oseltamivir Impurity 39 (CAS CATO-C4X-172039)
- Cholic Acid Impurity 29 (CAS 2024612-46-0)
- Oseltamivir Impurity 91 (CAS CATO-C4X-172091)
- Riluzole Impurity 29 (CAS 957791-08-1)
- Piroxicam EP Impurity H (CAS 24683-21-4)
- Drotaverin Impurity 75 (CAS CATO-C4X-243575)
- 2-(3,4-Difluorophenyl)-3-methylbutan-2-ol (CAS 1339602-00-4)
- CIS-5-CYANO-2-METHYL-PIPERIDINE-1-CARBOXYLIC ACID TERT-BUTYL ESTER (CAS 1253200-84-8)
- tert-Butyl 1-(2-ethoxyethyl)-5-oxo-3-pyrrolidinylcarbamate (CAS 1823257-86-8)
- (2,5-Dimethylbenzyl)hydrazine hydrochloride (CAS 1351630-64-2)
- 2-(4-Iodobutyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1236275-93-6)
- rel-((3R,6R)-1-tert-butyl 3-methyl 6-methylpiperidine-1,3-dicarboxylate) (CAS 1009376-75-3)
- Des-Tyr10-Tirzepatide (CAS CATO-CPTD788680)
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