Ceftizoxime Open-ring decarboxylation Dimer Impurity 56 CAS CATO-C4X-179356
| CAS No. | CATO-C4X-179356 |
| Molecular Formula | C24H28N10O7S4 |
| Molecular Weight | 696.80 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Ceftizoxime Open-ring decarboxylation Dimer Impurity 56 (CAS CATO-C4X-179356), a pharmacopoeial impurity reference standard (molecular formula C24H28N10O7S4, MW 696.80 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C24H28N10O7S4, Ceftizoxime Open-ring decarboxylation Dimer Impurity 56 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 696.80 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 | C24H28N10O7S4 |
| Molecular Weight | 696.80 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 10 |
| Sulfur Atoms | 4 |
Related Ceftizoxime Standards
- Ceftizoxime Impurity 91 (CAS CATO-C4X-179391)
- Ceftizoxime Open-ring decarboxylation Dimer Impurity 57 (CAS CATO-C4X-179357)
- Ceftizoxime Dimer Impurity 38 (CAS CATO-C4X-179338)
- Ceftizoxime Impurity 36 (CAS CATO-C4X-179336)
- Ceftizoxime Impurity 84 (CAS CATO-C4X-179384)
- Ceftizoxime impurity 97 (CAS 186957-49-3)
- Ceftizoxime Open-ring Dimer Impurity 55 (CAS CATO-C4X-179355)
- Ceftizoxime Alapivoxil (CAS 135821-54-4)
Recommended Standards
- 2-Ethoxy-1-[[2’-[2-(trityl)-2H-tetrazol-5-yl][1,1’-biphenyl]-4-yl]methyl]-1H-benzimidazole-4-carboxylic Acid Methyl Ester (Candesartan Impurity) (CAS 1796932-77-8)
- Periplogenin 3-O-β -glucopyranosyl- (1-4)-β- sarmentopyranoside (CAS 1253421-94-1)
- 22-Ethoxy-1-[[2'-[1-(triphenylmethyl)-1H-tetrazol-5-yl][1,1'-biphenyl]-4-yl]methyl]-1H-benzimidazole-7-carboxylic acid methyl ester (Candesartan Cilexetil Impurit) (CAS 150058-29-0)
- 3-[(6-deoxy-2-o-hexopyranosyl-3-o-methylhexopyranosyl)oxy]-14-hydroxycard-20(22)-enolide 497-32-5 AR-1F0669 (CAS 497-32-5)
- Phenytoin impurity 20 (CAS CATO-C4X-186420)
- Amiodarone Impurity 29 (CAS CATO-C4X-142529)
- Piroxicam Impurity 14 (CAS CATO-C4X-173314)
- N'-(2-Methoxyphenyl)Acetohydrazide (CAS 79984-63-7)
- 5-Methoxy-1-methyl-3,4-dihydronaphthalen-2(1H)-one (CAS 42263-75-2)
- 2-Bromobicyclo[4.2.0]octa-1,3,5-triene (CAS 38194-43-3)
- (R)-2-methoxy-2-phenylethan-1-ol (CAS 17628-72-7)
- N2-[4-(Aminomethyl)phenyl]-5-fluoro-N (CAS 916603-07-1)
- 8-Chloro-5-fluoroquinolin-4(1H)-one (CAS 1065092-32-1)
- Exenatide (CAS 141758-74-9（free base）)
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