Cefixime Impurity 33 CAS CATO-C4X-113933
| CAS No. | CATO-C4X-113933 |
| Molecular Formula | C23H20N8O11S3 |
| Molecular Weight | 680.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Cefixime Impurity 33 is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Cefixime Impurity 33 (CAS CATO-C4X-113933, C23H20N8O11S3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C23H20N8O11S3, Cefixime Impurity 33 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 680.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Cefixime Impurity 33 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 | C23H20N8O11S3 |
| Molecular Weight | 680.65 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 3 |
Related Cefixime Standards
- Cefixime Impurity 32 (CAS CATO-C4X-113932)
- Cefixime Impurity 63 (CAS CATO-C4X-113963)
- Cefixime Impurity 110 (CAS CATO-C4X-1139110)
- Cefixime Impurity 18 (CAS CATO-C4X-113918)
- Cefixime Impurity 30 (CAS CATO-C4X-113930)
- Cefixime Impurity 67 (CAS CATO-C4X-113967)
- Cefixime Impurity 113 (CAS 119608-72-9)
- Cefixime Impurity 56 (CAS CATO-C4X-113956)
Recommended Standards
- Relugolix Impurity 92 (CAS CATO-C4X-242992)
- Sulfasalazine EP Impurity B (CAS 1391062-49-9（free base）)
- Azilsartan Impurity 47 (CAS 1604812-35-2)
- 5',5""-Oxybis(2'-amino-[1,1':3',1"-terphenyl]-4,4"-dicarboxylic acid) (CAS 2345749-57-5)
- Pramipexole Impurity 54 (CAS CATO-C4X-110754)
- Chlorpheniramine Impurity 41 (CAS CATO-C4X-118841)
- Rimegepant Impurity 117 (CAS CATO-C4X-2487117)
- 2,3-Dimethyl-1-nitroanthracene-9,10-dione (CAS 61415-76-7)
- S-methyl-S-phenyl-N-methylsulfoximine (CAS 30004-67-2)
- Thymolphthalein monophosphate, sodium salt (CAS 123359-43-3)
- Platinum,dichloro(1-phenyl-1,2-ethanediamine-N,N')- (CAS 72426-83-6)
- 8-Hydroxy-3-methyl-6-vinyl-1H-isochromen-1-one (CAS 121442-64-6)
- Ethyl 5-Methyl-4-oxazolecarboxylate (CAS 32968-44-8)
- Integrin Binding Peptide trifluoroacetate salt (CAS 278792-07-7)
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