Cefoperazone EP Impurity C (Potassium salt) CAS 62557-28-2
| CAS No. | 62557-28-2 |
| Molecular Formula | C2H3N4S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C2H3N4SK, Cefoperazone EP Impurity C (Potassium salt) contains a nitrile group, sulfur-containing functionality; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 154.23 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
CATO supplies Cefoperazone EP Impurity C (Potassium salt) (CAS 62557-28-2), a pharmacopoeial impurity reference standard (molecular formula C2H3N4SK, MW 154.23 g/mol) used for the identification and quantification of trace impurities in APIs.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Cefoperazone EP Impurity C (Potassium salt) meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C2H3N4S K |
| Molecular Weight | 154.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Cefoperazone Standards
- Cefoperazone Dihydrate (CAS 113826-44-1)
- Cefoperazone Impurity N9 (CAS 1204325-21-2)
- Cefoperazone EP Impurity B (Sodium salt) (CAS 127923-94-8)
- Cefoperazone EP Impurity F (CAS 1315481-36-7)
- Cefoperazone Impurity N8 (CAS 1416704-15-8)
- Cefoperazone Impurity 8 (CAS 1476-46-6)
- Cefoperazone Impurity 45 (CAS 16681-77-9)
- Cefoperazone-d5 (CAS 2410425-70-4)
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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 18665070610 / Nicole.chen@cato-chem.com