Naproxen Impurity 2 CAS 60756-73-2
| CAS No. | 60756-73-2 |
| Molecular Formula | C13H12O3 |
| Molecular Weight | 216.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Naproxen Impurity 2 (CAS 60756-73-2), molecular formula C13H12O3 and molecular weight 216.23 g/mol, is a CATO reference standard with documented purity and traceability.
Naproxen Impurity 2 (C13H12O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures Naproxen Impurity 2 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H12O3 |
| Molecular Weight | 216.23 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
Related Naproxen Standards
- Naproxen Acid (CAS 123050-98-6)
- Naproxen EP Impurity I (CAS 23981-47-7)
- Naproxen EP Impurity A (CAS 52079-10-4)
- Naproxen Impurity N1 (CAS 27602-75-1)
- Naproxen Impurity 6 (CAS 174172-95-3)
- Naproxen Dehydro Impurity (CAS 27602-79-5)
- Naproxen Impurity 41 (CAS CATO-C4X-170841)
- Naproxen Impurity 42 (CAS CATO-C4X-170842)
Recommended Standards
- Methyl 7-methoxy-2-naphthoate (CAS 5088-92-6)
- Nepodin (CAS 3785-24-8)
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- rac-(2R,5S)-5-[(tert-butoxy)carbonyl]oxolane-2-carboxylic acid (CAS 2044705-39-5)
- Indocyanine Green Carboxylic Acid (CAS 181934-09-8)
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- Lactic Acid Impurity 5 (L-2-Phospholactic Acid) (CAS 28238-07-5)
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- <SC>DL</SC>-Sodium 3-hydroxybutyrate-1-<SUP>13</SUP>C (CAS 1173022-79-1)
- Semaglutide impurity 210 (CAS CATO-C4X-2226210)
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