Cefpodoxime Proxetil EP Impurity C CAS 339528-86-8
Purity >90%In StockPharmacopoeial Impurity Standards
| CAS No. | 339528-86-8 |
| Molecular Formula | C21H27N5O9S2 |
| Molecular Weight | 557.60 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Cefpodoxime Proxetil EP Impurity C (CAS 339528-86-8) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C21H27N5O9S2. Molecular weight: 557.60 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C21H27N5O9S2 |
| Molecular Weight | 557.60 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefpodoxime Standards
- Cefpodoxime Proxetil (CAS 87239-81-4)
- Cefpodoxime Proxetil EP Impurity D (CAS 947692-13-9)
- Cefpodoxime Proxetil EP Impurity C (CAS CATO-C4X-157944)
- Cefpodoxime Proxetil EP Impurity D (CAS CATO-C4X-157945)
- Cefpodoxime Proxetil Impurity 5 (CAS 82619-01-0)
- Cefpodoxime Proxetil Impurity 22 (CAS CATO-C4X-157922)
- Cefpodoxime Impurity 49 (CAS CATO-C4X-157949)
- Cefpodoxime Proxetil Impurity 10 (CAS CATO-C4X-157910)
Recommended Standards
- Valaciclovir Impurity 56 (CAS CATO-C4X-124856)
- Olmesartan Impurity 75 (CAS 1048948-20-4)
- Dabigatran Impurity 23 (CAS 211914-96-4)
- Posaconazole impurity 240 (CAS CATO-C4X-1208240)
- Menaquinone impurity 26 (CAS CATO-C4X-207626)
- (S)-3-(4-Bromophenoxy)butanoic acid (CAS 1416444-67-1)
- N-(3-(1-Butyryl-5-(furan-2-yl)-4,5-dihydro-1H-pyrazol-3-yl)phenyl)ethanesulfonamide (CAS 927145-39-9)
- 2-(4-Bromo-1H-pyrazol-3-yl)acetic acid (CAS 1378260-38-8)
- (2R,3R,4S,5R,6S)-2-(Acetoxymethyl)-6-(((3aS,4R,7R,8R,8aS)-2,2-dimethylhexahydro-4,7-epoxy[1,3]dioxolo[4,5-c]oxepin-8-yl)oxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate (CAS 5346-69-0)
- Semaglutide impurity 81 (CAS CATO-C4X-222681)
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 13829788188 / jacky.chen@cato-chem.com