Cefuroxime Impurity 79 CAS CATO-C4X-124579
| CAS No. | CATO-C4X-124579 |
| Molecular Formula | C15H13N3O6S |
| Molecular Weight | 363.35 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.
Cefuroxime Impurity 79 (CAS CATO-C4X-124579) is a certified pharmaceutical impurity reference standard with the molecular formula C15H13N3O6S and a molecular weight of 363.35 g/mol.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefuroxime Impurity 79 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 363.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C15H13N3O6S |
| Molecular Weight | 363.35 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefuroxime Standards
- (E)-Cefuroxime Sodium Impurity 43 (CAS CATO-C4X-124543)
- Cefuroxime Sodium EP Impurity H(Cefuroxime Axetil EP Impurity E) (CAS 947723-87-7)
- Cefuroxime Sodium EP Impurity C (CAS 69822-88-4)
- Cefuroxime Impurity 60 (CAS CATO-C4X-124560)
- Cefuroxime Impurity 63 (CAS CATO-C4X-124563)
- Cefuroxime Axetil Impurity 6 (CAS CATO-C4X-14366)
- Cefuroxime Axetil Impurity 15 (CAS 2704612-10-0)
- Cefuroxime Impurity 62 (CAS CATO-C4X-124562)
Recommended Standards
- Methyl 4-{4-[3-(trifluoromethyl)phenyl]-1,3-thiazol-2-yl}benzenecarboxylate (CAS 321430-12-0)
- 1-Oxo-2-(4-phenoxyphenyl)-1,2,3,6,7,7a-hexahydro-3a,6-epoxyisoindole-7-carboxylic acid (CAS 1005151-01-8)
- 4-[(E)-2-(Furan-2-yl)ethenyl]-8-(trifluoromethoxy)-2H,3H-thieno[3,2-c]quinoline (CAS 866133-51-9)
- Ethyl 2-((4-ethyl-5-(1-methyl-5-(trifluoromethyl)-1h-pyrazol-3-yl)-4h-1,2,4-triazol-3-yl)thio)acetate (CAS 1005680-56-7)
- Felbinac Trometamol Impurity 2 (CAS CATO-C4X-33682)
- Orforglipron Impurity 19 (CAS CATO-C4X-323419)
- Vonoprazan Impurity 270 (CAS CATO-C4X-1020270)
- (3S-cis)-3-Methoxy-4-oxoazetidin-2-yl acetate (CAS 155321-75-8)
- Methyl 3-chloro-4-cyanopicolinate (CAS 1807136-40-8)
- 3-(1-Aminobutan-2-yl)pyrrolidin-3-ol (CAS 1532609-26-9)
- 2-(2-Bromophenoxy)-2-phenylacetic acid (CAS 938344-83-3)
- 2-(4-fluoro-3-methylphenyl)-2-oxoacetaldehyde (CAS 81593-26-2)
- Bis(acetato-κO,κO')[1,1'-(1S)-[1,1'-binaphthalene]-2,2'-diylbis[1,1-diphenylphosphine-κP]]ruthenium (CAS 104713-03-3)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
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