Naproxen Impurity N3 CAS 72337-73-6
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 72337-73-6 |
| Molecular Formula | C14H13BrO2 |
| Molecular Weight | 293.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Naproxen Impurity N3 (CAS 72337-73-6) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C14H13BrO2. Molecular weight: 293.16 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C14H13BrO2 |
| Molecular Weight | 293.16 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Br-containing |
Related Naproxen Standards
- Naproxen Impurity 36 (CAS CATO-C4X-170836)
- Naproxen Impurity 16 (CAS CATO-C4X-170816)
- Naproxen Impurity 18 (CAS 2601735-81-1)
- Naproxen Glycerol Ester Impurity (CAS 38835-17-5)
- Naproxen Impurity 34 (CAS CATO-C4X-170834)
- Naproxen Impurity 35 (CAS CATO-C4X-170835)
- Naproxen Impurity 47 (CAS 99705-42-7)
- Naproxen Impurity 20 (CAS 27655-95-4)
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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 13829788188 / jacky.chen@cato-chem.com