Cefaclor Impurity 33 CAS CATO-C4X-127033
| CAS No. | CATO-C4X-127033 |
| Molecular Formula | C15H14ClN3O5S |
| Molecular Weight | 383.81 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 383.81 g/mol gives Cefaclor Impurity 33 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Cefaclor Impurity 33 (CAS CATO-C4X-127033), a pharmacopoeial impurity reference standard (molecular formula C15H14ClN3O5S, MW 383.81 g/mol) used for the identification and quantification of trace impurities in APIs.
Cefaclor Impurity 33 (C15H14ClN3O5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 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 Cefaclor 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 | C15H14ClN3O5S |
| Molecular Weight | 383.81 g/mol |
| Purity | >90% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefaclor Standards
- Cefaclor Impurity 20 (CAS CATO-C4X-127020)
- Cefaclor Oxide Impurity (CAS CATO-C4X-127022)
- Cefaclor Impurity 49 (CAS CATO-C4X-127049)
- Cefaclor Impurity 50 (CAS CATO-C4X-127050)
- Cefaclor Impurity 23 (CAS 1426173-90-1)
- Cefaclor Ethyl Ester (CAS CATO-C4X-127052)
- Cefaclor Impurity C37 (CAS 53994-83-5)
- Cefaclor (CAS 53994-73-3)
Recommended Standards
- 2-(4-((4-Chloro-2-nitrophenyl)sulfonyl)piperazin-1-yl)pyrimidine (CAS 866153-27-7)
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- 2-((4-Chlorophenyl)amino)-4,9-dioxo-4,9-dihydronaphtho[2,3-b]thiophene-3-carboxylic acid (CAS 1258637-95-4)
- 1-(Tert-butyl) 2-methyl (2S,4S)-4-(3-chloro-4-formylphenoxy)pyrrolidine-1,2-dicarboxylate (CAS 2442510-17-8)
- Entecavir Impurity 72 (CAS CATO-C4X-107772)
- Empagliflozin impurity 248 (CAS 143128-40-9)
- Rosuvastatin Impurity 147 (CAS CATO-C4X-1169147)
- 1-Morpholino-3-(piperazin-1-yl)propan-1-onedihydrochloride (CAS 1159822-74-8)
- 2-Chloro-5-fluoro-3-(trifluoromethyl)-benzaldehyde (CAS 95445-69-5)
- tert-Butyl (8aS)-7-oxo-octahydropyrrolo[1,2-a]piperazine-2-carboxylate (CAS 1190946-32-7)
- AMN 082 DihydrochlorideDISCONTINUED PLEASE SEE A634613 (CAS 97075-46-2)
- 2-Methyl-N-(3-(pyridin-3-yl)oxetan-3-yl)propane-2-sulfinamide (CAS 1955560-55-0)
- (E)-3,4-dimethoxybenzaldehyde oxime (CAS 39627-82-2)
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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