Cefotaxime Impurity 38 CAS CATO-C4X-120138
| CAS No. | CATO-C4X-120138 |
| Molecular Formula | C22H22N8O9S3 |
| Molecular Weight | 638.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C22H22N8O9S3, Cefotaxime Impurity 38 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 638.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Cefotaxime Impurity 38 (CAS CATO-C4X-120138) is a certified pharmaceutical impurity reference standard with the molecular formula C22H22N8O9S3 and a molecular weight of 638.65 g/mol.
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), Cefotaxime Impurity 38 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 | C22H22N8O9S3 |
| Molecular Weight | 638.65 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 3 |
Related Cefotaxime Standards
- Cefotaxime EP Impurity G (CAS 2489535-06-8)
- Cefotaxime Impurity 96 (CAS CATO-C4X-120196)
- Cefotaxime Impurity 70 (CAS CATO-C4X-120170)
- Cefotaxime Impurity 41 (CAS CATO-C4X-121241)
- Cefotaxime Impurity 63 (CAS CATO-C4X-120163)
- Cefotaxime Impurity 75 (CAS CATO-C4X-120175)
- Cefotaxime Impurity 35 (CAS CATO-C4X-120135)
- Cefotaxime Impurity 23 (CAS CATO-C4X-120123)
Recommended Standards
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