Cefodizime Impurity 13 CAS CATO-C4X-180613
| CAS No. | CATO-C4X-180613 |
| Molecular Formula | C20H20N6O9S4 |
| Molecular Weight | 616.67 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Cefodizime Impurity 13 (CAS CATO-C4X-180613, C20H20N6O9S4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Cefodizime Impurity 13 (C20H20N6O9S4) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C20H20N6O9S4 |
| Molecular Weight | 616.67 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 4 |
Related Cefodizime Standards
- Cefodizime Impurity 14 (CAS CATO-C4X-180614)
- Cefodizime Impurity 12 (CAS CATO-C4X-180612)
- Cefodizime Impurity 19 (CAS CATO-C4X-180619)
- Cefodizime Impurity 23 (CAS CATO-C4X-180623)
- Cefodizime Impurity 4 (CAS CATO-C4X-18064)
- Cefodizime Oxide Impurity 1 (CAS CATO-C4X-18068)
- Cefodizime Impurity 24 (CAS CATO-C4X-180624)
- Cefodizime Impurity 5 (CAS 120533-30-4)
Recommended Standards
- (R)-7-(but-2-yn-1-yl)-3-methyl-8-(3-(5-methyl-1,3-dioxoisoindolin-2-yl)piperidin-1-yl)-1-((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione (CAS 1573118-33-8)
- K-Q-A-G-D-V (CAS 80755-87-9)
- Norverapamil glucuronide (CAS 126883-99-6)
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- Uridine Impurity 22 (CAS CATO-C4X-233422)
- Roflumilast Impurity 11 (CAS CATO-C4X-204711)
- Rosuvastatin Impurity 242 (CAS CATO-C4X-1169242)
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- (2R,3R,4S,5R,6S)-4,5-bis(benzyloxy)-2-(hydroxymethyl)-6-(p-tolylthio)tetrahydro-2H-pyran-3-ol (CAS 596087-18-2)
- 1-Butyl-6-hydroxy-5-(((4-isopropylphenyl)imino)methyl)-4-methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile (CAS 883278-93-1)
- 1-(5-Bromo-2-chloropyridin-3-yl)ethanol (CAS 1111638-41-5)
- Des-Gln19-Tirzepatide (CAS CATO-CPTD788954)
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