Cefuroxime Impurity 76 CAS CATO-C4X-124576
| CAS No. | CATO-C4X-124576 |
| Molecular Formula | C21H23N3O10S |
| Molecular Weight | 509.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Cefuroxime Impurity 76 (CAS CATO-C4X-124576) is a certified pharmaceutical impurity reference standard with the molecular formula C21H23N3O10S and a molecular weight of 509.49 g/mol.
Based on its molecular formula C21H23N3O10S, Cefuroxime Impurity 76 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 509.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C21H23N3O10S |
| Molecular Weight | 509.49 g/mol |
| Purity | >95% |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefuroxime Standards
- Cefuroxime Impurity 59 (CAS CATO-C4X-124559)
- Cefuroxime Axetil (CAS 64544-07-6)
- Cefuroxime Axetil EP Impurity A (CAS 123458-61-7)
- Cefuroxime Axetil Impurity 10 (CAS 64599-29-7)
- Cefuroxime Axetil EP Impurity B (CAS 97232-96-7)
- Cefuroxime Axetil Impurity 9 (CAS CATO-C4X-14369)
- Cefuroxime Impurity 71 (CAS CATO-C4X-124571)
- Cefuroxime Impurity 84 (CAS CATO-C4X-124584)
Recommended Standards
- 4-(2-Hydroxyethyl)-5-methyl-2-phenyl-1-((2-(2,2,2-trifluoroacetyl)-1,2,3,4-tetrahydroisoquinolin-7-yl)sulfonyl)-1,2-dihydro-3H-pyrazol-3-one (CAS 861207-34-3)
- Faropenem Impurity 84 (CAS CATO-C4X-128984)
- Dolutegravir Impurity 22 (CAS 1206102-11-5)
- Piperaquine Impurity 10 (CAS CATO-C4X-233710)
- Aprepitant impurity 56 (CAS CATO-C4X-114156)
- Isavuconazole Impurity 41 (CAS CATO-C4X-123641)
- Furosemide Impurity 52 (CAS CATO-C4X-140252)
- 2-(4'-Methoxy-[1,1'-biphenyl]-2-yl)aceticacid (CAS 108478-21-3)
- 2-(3-Methoxyphenyl)thiazole-4-carbaldehyde (CAS 749902-11-2)
- 3-O-Benzyl 17α-Estradiol 17-O-(4-Nitrobenzoate) (CAS 229486-10-6)
- 3-(3-Chlorophenyl)propanamide (CAS 1268140-55-1)
- (3-Fluoro-4-((4-methylpiperidin-1-yl)methyl)phenyl)boronic acid (CAS 1334321-25-3)
- (6-Ethoxy-4-methylpyridin-3-yl)boronic acid (CAS 1256355-37-9)
- Acetyl-Tau Peptide (273-284) amide trifluoroacetate salt (CAS 1684399-52-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com