Cefixime Impurity 32 CAS CATO-C4X-113932
| CAS No. | CATO-C4X-113932 |
| Molecular Formula | C23H20N8O11S3 |
| Molecular Weight | 680.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Cefixime Impurity 32 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.
As a process- or degradation-related impurity, Cefixime Impurity 32 (CAS CATO-C4X-113932, C23H20N8O11S3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C23H20N8O11S3, Cefixime Impurity 32 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 680.65 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.
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.
Physical & Chemical Properties
| Molecular Formula | C23H20N8O11S3 |
| Molecular Weight | 680.65 g/mol |
| Purity | >90% |
| 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 3 |
Related Cefixime Standards
- Cefixime Impurity 33 (CAS CATO-C4X-113933)
- Cefixime Impurity 63 (CAS CATO-C4X-113963)
- Cefixime Impurity 110 (CAS CATO-C4X-1139110)
- Cefixime Impurity 18 (CAS CATO-C4X-113918)
- Cefixime Impurity 30 (CAS CATO-C4X-113930)
- Cefixime Impurity 67 (CAS CATO-C4X-113967)
- Cefixime Impurity 113 (CAS 119608-72-9)
- Cefixime Impurity 56 (CAS CATO-C4X-113956)
Recommended Standards
- Relugolix Impurity 92 (CAS CATO-C4X-242992)
- Azilsartan Impurity 47 (CAS 1604812-35-2)
- Nicotinamide Impurity 1 (CAS 4090-29-3)
- Sulfasalazine EP Impurity B (CAS 1391062-49-9（free base）)
- Upadacitinib Impurity 116 (CAS CATO-C4X-2405116)
- Risperidone EP Impurity H (CAS 158697-67-7)
- Baxdrostat Impurity 17 (CAS 3060412-75-8)
- 1-[4-(4-Hydroxypiperidin-1-yl)-3-nitrobenzenesulfonyl]piperidine-4-carboxylic acid (CAS 866132-76-5)
- 1-Tritylpiperazine (CAS 32422-96-1)
- 2-(3-(Difluoromethyl)-2-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1698908-91-6)
- 3-Chloro-2-fluoro-4-(methylthio)pyridine (CAS 1823323-05-2)
- 1,1,2,2-Tetramethyl-1,2-di(thiophen-2-yl)disilane (CAS 124733-24-0)
- 8-(3-Bromophenyl)-5,12,14-trioxa-2-azatetracyclo[7.7.0.0^{3,7}.0^{11,15}]hexadeca-1(9),3(7),10,15-tetraen-6-one (CAS 867068-21-1)
- Acetyl decapeptide-3 (CAS 935288-50-9)
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