Cefixime Impurity 9 CAS 80544-17-8
| CAS No. | 80544-17-8 |
| Molecular Formula | C8H9N3O5S |
| Molecular Weight | 259.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Cefixime Impurity 9 (CAS 80544-17-8, C8H9N3O5S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Cefixime Impurity 9 (C8H9N3O5S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
CATO manufactures Cefixime Impurity 9 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H9N3O5S |
| Molecular Weight | 259.24 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefixime Standards
- Cefixime Impurity 78 (CAS CATO-C4X-113978)
- Cefixime Impurity C17 (CAS 84080-68-2)
- Cefixime Impurity 44 (CAS CATO-C4X-113944)
- Cefixime Impurity 34 (CAS CATO-C4X-113934)
- Cefixime Impurity 35 (CAS CATO-C4X-113935)
- Cefixime Impurity C68 (CAS 74440-05-4)
- Cefixime Impurity 15 (CAS 84080-70-6)
- Cefixime Impurity 83 (CAS CATO-C4X-113983)
Recommended Standards
- Fosfomycin Impurity 69 (CAS CATO-C4X-131669)
- Methyl 5-(Methylsulfonyl)-2-nitrobenzoate (CAS 949033-22-1)
- (S)-oxiran-2-ylmethyl 2-nitrobenzenesulfonate (CAS 86132-66-3)
- Methyl 4-(methylsulfonyl)-3-nitrobenzoate (CAS 51919-73-4)
- Acetyl-4-iodo-DL-phenylalanine (CAS 457615-88-2)
- Baricitinib Impurity 35 (CAS 25240-33-9)
- Sitagliptin Impurity 106 (CAS CATO-C4X-1144106)
- 5-Fluoro-2,6-dihydroxynicotinamide (CAS 71765-03-2)
- 6-Bromo-2-(trifluoromethyl)oxazolo[5,4-b]pyridine (CAS 886373-24-6)
- 2-Chloro-6-ethylaminopyrazine (CAS 957065-84-8)
- 1-Phenyl-N-(2-((3-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)methanesulfonamide (CAS 1020975-89-6)
- 2-((2,3-Dimethylphenyl)carbamoyl)cyclohexane-1-carboxylic acid (CAS 199855-49-7)
- ((1,4-Phenylenebis(oxy))bis(4,1-phenylene))bis((4-fluorophenyl)methanone) (CAS 93597-87-6)
- D-[γ-Glu](Side Chain)-Semaglutide (CAS CATO-C4X-2226254)
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