Naproxen Impurity 17 CAS CATO-C4X-170817
| CAS No. | CATO-C4X-170817 |
| Molecular Formula | C19H24O4 |
| Molecular Weight | 316.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Naproxen Impurity 17.
Naproxen Impurity 17 (CAS CATO-C4X-170817) is a certified pharmaceutical impurity reference standard with the molecular formula C19H24O4 and a molecular weight of 316.39 g/mol.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, Naproxen Impurity 17 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 316.39 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), Naproxen Impurity 17 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 | C19H24O4 |
| Molecular Weight | 316.39 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Naproxen Standards
- Naproxen Impurity 46 (CAS 111198-00-6)
- Naproxen Impurity 38 (CAS 2514763-96-1)
- Naproxen Impurity 20 (CAS 27655-95-4)
- Naproxen EP Impurity C (CAS 84236-26-0)
- Naproxen Impurity 49 (CAS CATO-C4X-170849)
- Naproxen Glycerol Ester Impurity (CAS 38835-17-5)
- Naproxen Impurity 34 (CAS CATO-C4X-170834)
- Naproxen Impurity 35 (CAS CATO-C4X-170835)
Recommended Standards
- Formoterol Impurity 50 (CAS 245759-62-0)
- Formoterol Impurity 47 (CAS 245759-66-4)
- Pimavanserin Impurity 14 (CAS CATO-C4X-193814)
- Formoterol EP Impurity A (CAS 150513-24-9)
- Cefpodoxime Impurity 47 (CAS CATO-C4X-157947)
- Cinacalcet Impurity 29 (CAS 136908-26-4)
- Finerenone Impurity 145 (CAS CATO-C4X-2880145)
- 9-Ethyl-7-methoxy-1,3-dihydrofuro[3,4-b]quinoline (CAS 540804-03-3)
- 2-Chloro-N-(2-chlorobenzyl)-N-methylacetamide (CAS 1034708-84-3)
- N-methyl-1-(5-phenylfuran-2-yl)methanamine (CAS 892589-03-6)
- (S)-5-oxopiperidine-2-carboxylic acid (CAS 146467-21-2)
- 3-Amino-n-(4-methylphenyl)propanamide (CAS 515131-50-7)
- 2-((3,5-Dimethylbenzyl)amino)-2-methylpropan-1-ol (CAS 1179736-65-2)
- MOTS-c Peptide (CAS 1627580-64-6)
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