Cefpirome Impurity 2 CAS 124667-22-7
| CAS No. | 124667-22-7 |
| Molecular Formula | C22H22N6O5S2 |
| Molecular Weight | 514.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C22H22N6O5S2, Cefpirome Impurity 2 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 514.58 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Cefpirome Impurity 2 (CAS 124667-22-7), a pharmacopoeial impurity reference standard (molecular formula C22H22N6O5S2, MW 514.58 g/mol) used for the identification and quantification of trace impurities in APIs.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C22H22N6O5S2 |
| Molecular Weight | 514.58 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Cefpirome Standards
- Cefpirome Sulfate (CAS 84957-29-9)
- Cefpirome Impurity 1 (CAS 97164-55-1)
- Cefpirome Impurity 3 (CAS 130431-30-0)
- Cefpirome Impurity 9 (CAS 124667-21-6)
- Cefpirome Impurity 4 (CAS CATO-C4X-12074)
- Cefpirome Impurity 5 (CAS CATO-C4X-12075)
- Cefpirome Impurity 48 (CAS CATO-C4X-120748)
- Cefpirome Impurity 53 (CAS CATO-C4X-120753)
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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
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com