Cefpodoxime Proxetil EP Impurity A -d3 Sodium Salt CAS CATO-C4X-157931
| CAS No. | CATO-C4X-157931 |
| Molecular Formula | - |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Cefpodoxime Proxetil EP Impurity A -d3 Sodium Salt.
Cefpodoxime Proxetil EP Impurity A -d3 Sodium Salt (CAS CATO-C4X-157931) is a certified pharmaceutical impurity reference standard with the molecular formula C15H13D3N5O6S2Na and a molecular weight of 452.45 g/mol.
The molecular framework of Cefpodoxime Proxetil EP Impurity A -d3 Sodium Salt (C15H13D3N5O6S2Na) is characterized by deuterium isotope labeling, a flavonoid core, 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. 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.
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 | C15H13D3N5O6S2 Na |
| Molecular Weight | 452.45 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefpodoxime Standards
- Cefpodoxime Proxetil Impurity 8 (CAS 1192365-87-9)
- Cefpodoxime Proxetil EP Impurity E (CAS 217803-89-9)
- Cefpodoxime Impurity 32 (CAS 24701-69-7)
- Cefpodoxime Proxetil EP Impurity C (CAS 339528-86-8)
- Cefpodoxime Proxetil EP Impurity A (CAS 80210-62-4)
- Cefpodoxime Proxetil Impurity 5 (CAS 82619-01-0)
- Cefpodoxime sodium (CAS 82619-04-3)
- Cefpodoxime Proxetil (CAS 87239-81-4)
Recommended Standards
- Mirabegron Impurity 80 (CAS CATO-C4X-103280)
- Vigabatrin Impurity 12 (CAS CATO-C4X-119612)
- Quetiapine EP Impurity J HCl (CAS 1356906-17-6(free base))
- 2,2-Dimethyl-1-(piperidin-4-yl)propan-1-one (CAS 1334488-81-1)
- Prasugrel Impurity 13 (CAS 2091625-61-3)
- 4-((4-Isopropylbenzyl)oxy)benzoic acid (CAS 84404-16-0)
- Methyl 3-(2-((2-(2-phenoxyacetamido)phenyl)thio)acetamido)thiophene-2-carboxylate (CAS 866038-87-1)
- 1-O-tert-Butyl 6-O-methyl indole-1,6-dicarboxylate (CAS 354587-63-6)
- 2-(3-Bromo-2-methoxyphenyl)-1,3-dioxolane (CAS 2271442-83-0)
- Semaglutide impurity 256 (CAS CATO-C4X-2226256)
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