Cefpodoxime Proxetil Impurity 34 CAS CATO-C4X-157934
| CAS No. | CATO-C4X-157934 |
| Molecular Formula | C35H40N10O14S4 |
| Molecular Weight | 953.01 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Cefpodoxime Proxetil Impurity 34 (CAS CATO-C4X-157934), a pharmacopoeial impurity reference standard (molecular formula C35H40N10O14S4, MW 953.01 g/mol) used for the identification and quantification of trace impurities in APIs.
Cefpodoxime Proxetil Impurity 34 (C35H40N10O14S4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C35H40N10O14S4 |
| Molecular Weight | 953.01 g/mol |
| Purity | >90% |
| 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) | 21.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 10 |
| Sulfur Atoms | 4 |
Related Cefpodoxime Standards
- Cefpodoxime Proxetil Impurity 21 (CAS CATO-C4X-157921)
- Cefpodoxime impurity 68 (CAS CATO-C4X-157968)
- Cefpodoxime impurity 69 (CAS CATO-C4X-157969)
- Cefpodoxime Impurity 64 (CAS CATO-C4X-157964)
- Cefpodoxime Impurity 66 (CAS CATO-C4X-157966)
- Cefpodoxime Impurity 65 (CAS CATO-C4X-157965)
- Cefpodoxime Proxetil Impurity 26 (CAS CATO-C4X-157926)
- Cefpodoxime Proxetil Impurity 27 (CAS CATO-C4X-157927)
Recommended Standards
- Dichloro[5,10,15,20-tetrakis(2,4,6-trimethylphenyl)-21H,23H-porphinato]ruthenium(IV) (CAS 145698-90-4)
- Isavuconazole Impurity 18 (CAS CATO-C4X-123618)
- H-Pro-Thr-His-Ile-Lys-Trp-Gly-Asp-OH (CAS 117620-76-5)
- N-(Azido-PEG4)-N-bis (PEG4-NHS ester)(97%) (CAS 2182601-77-8)
- Tolvaptan Impurity 16 (CAS 160129-45-3)
- Elagolix Impurity 77 (CAS CATO-C4X-206877)
- Methylprednisolone EP Impurity F (CAS 1625-39-4)
- 9-Chloro-2-(trifluoromethoxy)acridine (CAS 741281-21-0)
- 3-Ethoxy-4-(methylsulfonyl)-1,2,5-thiadiazole (CAS 178368-42-8)
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- 1-Bromo-4-[(2-methoxyethoxy)methyl]benzene (CAS 166959-29-1)
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- 3-Amino-2-fluoro-6-methylbenzoic acid (CAS 1186194-30-8)
- Galanin (1-13)-Neuropeptide Y (25-36) amide (CAS 147138-51-0)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com