Naproxen EP Impurity O CAS 2471-70-7
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 2471-70-7 |
| Molecular Formula | C12H10O3 |
| Molecular Weight | 202.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Naproxen EP Impurity O (CAS 2471-70-7) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C12H10O3. Molecular weight: 202.21 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C12H10O3 |
| Molecular Weight | 202.21 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Naproxen Standards
- Naproxen EP Impurity K (CAS 77301-42-9)
- Naproxen EP Impurity L (CAS 3900-45-6)
- Naproxen Impurity 29 (CAS 17056-94-9)
- Naproxen Impurity 32 (CAS 5672-94-6)
- Naproxen Impurity 40 (CAS 36815-04-0)
- Naproxen Impurity 52 (CAS CATO-C4X-170852)
- Naproxen Impurity 16 (CAS 34352-92-6)
- Naproxen Impurity 6 (CAS 174172-95-3)
Recommended Standards
- Potassium Clavulanate impurity 23 (CAS 112240-59-2)
- Letrozole Impurity 24 (CAS CATO-C4X-182924)
- Agomelatine Impurity 37 (CAS 72836-71-6)
- Sugammadex Impurity 32 (CAS CATO-C4X-190632)
- Vonoprazan Impurity 66 (CAS 2170020-79-6)
- Azido-PEG1-PFP ester (CAS 1807505-32-3)
- 5-Acetyl-4-(2-chlorophenyl)-6-methyl-3,4-dihydropyridin-2(1H)-one (CAS 252875-45-9)
- 2,4-dichloro-7-fluoro-8-methyl-quinazoline (CAS 1039736-73-6)
- 8-Bromo-6-chloroimidazo[1,2-a]pyrazin-3-amine (CAS 1289120-93-9)
- Insulin Degludec Impurity 9 (CAS CATO-C4X-21579)
Why CATO?
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