Cefpodoxime Proxetil Impurity 22 CAS CATO-C4X-157922
| CAS No. | CATO-C4X-157922 |
| Molecular Formula | C20H25N5O9S2 |
| Molecular Weight | 543.57 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Cefpodoxime Proxetil Impurity 22 (CAS CATO-C4X-157922) is a certified pharmaceutical impurity reference standard with the molecular formula C20H25N5O9S2 and a molecular weight of 543.57 g/mol.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefpodoxime Proxetil Impurity 22 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 543.57 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Cefpodoxime Proxetil Impurity 22 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 | C20H25N5O9S2 |
| Molecular Weight | 543.57 g/mol |
| Purity | 97%+ |
| 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 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefpodoxime Standards
- Cefpodoxime Proxetil Impurity 5 (CAS 82619-01-0)
- Cefpodoxime Impurity 49 (CAS CATO-C4X-157949)
- Cefpodoxime Proxetil (CAS 87239-81-4)
- Cefpodoxime Proxetil EP Impurity C (CAS 339528-86-8)
- 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 EP Impurity B (CAS 947692-14-0)
Recommended Standards
- Nilotinib Impurity 11 (CAS CATO-C4X-125611)
- Ac-Val-Asp-Val-Ala-Asp-aldehyde (pseudo acid) (CAS 194022-51-0)
- 4-Nitrophenyl 6-O-trityl-α-D-glucopyranoside (CAS 655246-35-8)
- (S)-2-(2'-(bis(4-methoxyphenyl)phosphanyl)-[1,1'-biphenyl]-2-yl)-4-phenyl-4,5-dihydrooxazole (CAS 1198791-46-6)
- Baricitinib Impurity 76 (CAS CATO-C4X-226076)
- Domperidone EP Impurity C (CAS 118435-03-3(free base))
- Sitagliptin Impurity 25 (CAS CATO-C4X-114425)
- 2-(2-Iodophenoxy)-5-methoxyaniline (CAS 869790-17-0)
- Paroxetine Impurity 25 (CAS CATO-C4X-103525)
- 7-Chloro-2-(((3-chlorophenyl)thio)methyl)-3-(3,5-dimethylphenyl)quinazolin-4(3H)-one (CAS 338966-10-2)
- (1S,3S,5S)-2-Azabicyclo[3.1.0]hexane-3-carboxamide 2,2,2-trifluoroacetate (CAS 361440-69-9)
- Methyl 2-methyl-2-(6-oxo-1,6-dihydropyrimidin-2-yl)propanoate (CAS 2845977-97-9)
- (R)-2-Acetamido-2-cyclopentylacetic acid (CAS 2521-85-9)
- (Ser(PO?H?)2?2)-Tau Peptide (260-264) PAb Blocking trifluoroacetate salt (CAS 2022956-57-4)
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