Naproxen Etemesil CAS 385800-16-8
| CAS No. | 385800-16-8 |
| Molecular Formula | C17H20O5S |
| Molecular Weight | 336.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Naproxen Etemesil 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.
CATO supplies Naproxen Etemesil (CAS 385800-16-8), a certified reference material (molecular formula C17H20O5S, MW 336.40 g/mol) for analytical method development and quality control.
Naproxen Etemesil (C17H20O5S) contains a flavonoid core, a sulfone 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C17H20O5S |
| Molecular Weight | 336.40 g/mol |
| Purity | 97%+ |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Sulfur Atoms | 1 |
Related Naproxen Standards
- Naproxen Impurity 49 (CAS CATO-C4X-170849)
- Naproxen EP Impurity D (CAS 116883-61-5)
- Naproxen EP Impurity D (CAS 116883-62-6)
- Naproxen Impurity 17 (CAS CATO-C4X-170817)
- 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)
Recommended Standards
- N1-Ethyl-N2-(2-(4-fluorophenyl)-2-(4-methylpiperazin-1-yl)ethyl)oxalamide (CAS 903356-31-0)
- Tert-butyl 2-(((5-fluoropyridin-2-yl)oxy)methyl)-8-azabicyclo[3.2.1]Octane-8-carboxylate (CAS 2007919-75-5)
- N-[3-Fluoro-4-(morpholin-4-yl)phenyl]-2-(4-methylpiperazin-1-yl)acetamide (CAS 439121-34-3)
- Tert-butyl 4-carbamoyl-4-(4-fluorobenzyl)piperidine-1-carboxylate (CAS 906329-65-5)
- 2-(4-Chloro-1H-pyrazol-1-yl)propanamide (CAS 1205841-05-9)
- Methyl 4-hydroxy-6-(trifluoromethyl)picolinate (CAS 1060810-76-5)
- n,n-Diallyl-4-chloropicolinamide (CAS 1094281-24-9)
- 2-[2-(Dimethylamino)ethoxy]-5-fluoroaniline (CAS 946729-22-2)
- 2-(3-Methyl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-2-yl)ethan-1-amine (CAS 1781913-73-2)
- 2-(4-Methylpiperazin-1-yl)-5-nitrobenzonitrile (CAS 451459-92-0)
- 2-Chloro-n-(dicyclopropylmethyl)acetamide (CAS 1240528-98-6)
- 2,2-Difluoro-3-hydroxy-3,5-dimethylhexanoic acid (CAS 1248448-97-6)
- Methyl N-Cbz-3-piperidylacetate (CAS 86827-08-9)
- Liraglutide Impurity 25 (CAS CATO-C4X-199225)
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