Cefoxitin Impurity 43 CAS 40514-91-8
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 40514-91-8 |
| Molecular Formula | C13H20N2O4S |
| Molecular Weight | 300.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Cefoxitin Impurity 43 (CAS 40514-91-8), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C13H20N2O4S. Molecular weight: 300.37 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C13H20N2O4S |
| Molecular Weight | 300.37 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Cefoxitin Standards
- Cefoxitin Impurity 33 (CAS CATO-C4X-157833)
- Cefoxitin EP Impurity C（Cefalotin EP Impurity D） (CAS 10590-10-0)
- Cefoxitin Impurity 44 (CAS CATO-C4X-157844)
- Cefoxitin EP Impurity J (CAS 1422023-33-3)
- Cefoxitin Impurity 12 (CAS 40514-94-1)
- Cefoxitin Impurity 27 (CAS CATO-C4X-157827)
- Cefoxitin Impurity 28 (CAS CATO-C4X-157828)
- Cefoxitin Impurity 34 (CAS CATO-C4X-157834)
Recommended Standards
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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