Flomoxef Impurity 28 CAS CATO-C4X-138228
| CAS No. | CATO-C4X-138228 |
| Molecular Formula | C24H21ClF2N2O5S |
| Molecular Weight | 522.95 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 522.95 g/mol gives Flomoxef Impurity 28 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Flomoxef Impurity 28 (CAS CATO-C4X-138228) is a certified pharmaceutical impurity reference standard with the molecular formula C24H21ClF2N2O5S and a molecular weight of 522.95 g/mol.
Flomoxef Impurity 28 (C24H21ClF2N2O5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Flomoxef Impurity 28 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 | C24H21ClF2N2O5S |
| Molecular Weight | 522.95 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Flomoxef Standards
- Flomoxef Impurity 53 (CAS CATO-C4X-138253)
- Flomoxef Impurity 15 (CAS CATO-C4X-138215)
- Flomoxef Impurity N2 (CAS 91177-27-4)
- Flomoxef Impurity 29 (CAS 2095697-75-7)
- Flomoxef Impurity 1 (CAS 68313-94-0)
- Flomoxef Impurity 52 (CAS CATO-C4X-138252)
- Flomoxef Impurity 49 (CAS CATO-C4X-138249)
- Flomoxef Impurity 3 (CAS 103057-61-0)
Recommended Standards
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- Alectinib Impurity 90 (CAS 2089333-06-0)
- Sertraline Impurity 63 (CAS CATO-C4X-134463)
- Cefovecin impurity 7 (CAS CATO-C4X-30357)
- N-(4-(naphthalen-1-yl)phenyl)-4-phenylnaphthalen-1-amine (CAS 949462-20-8)
- (4Z)-4-[(Dimethylamino)methylidene]-1-phenyl-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-5-one (CAS 69586-72-7)
- 3-amino-2-chloroacrolein (CAS 221615-73-2)
- 5-Ethynyl-2-methoxypyridin-3-amine (CAS 1391979-22-8)
- 3-amino-3-(3,4-dichloro-phenyl)-propionic acid (CAS 117391-57-8)
- N-(3-chlorophenyl)-2-((5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-yl)thio)acetamide (CAS 332162-08-0)
- Semaglutide Impurity 3 (CAS CATO-C4X-22263)
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