Cefpodoxime Impurity 65 CAS CATO-C4X-157965
| CAS No. | CATO-C4X-157965 |
| Molecular Formula | C36H40N10O15S4 |
| Molecular Weight | 981.02 g/mol |
| 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 Impurity 65.
CATO supplies Cefpodoxime Impurity 65 (CAS CATO-C4X-157965), a pharmacopoeial impurity reference standard (molecular formula C36H40N10O15S4, MW 981.02 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Cefpodoxime Impurity 65 (C36H40N10O15S4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 22.0, corresponding to approximately 22 ring(s) or double-bond equivalent(s). With a molecular weight of 981.02 g/mol, it falls into the high-molecular-weight range. 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 | C36H40N10O15S4 |
| Molecular Weight | 981.02 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) | 22.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 10 |
| Sulfur Atoms | 4 |
Related Cefpodoxime Standards
- Cefpodoxime Impurity 64 (CAS CATO-C4X-157964)
- Cefpodoxime Impurity 66 (CAS CATO-C4X-157966)
- Cefpodoxime Proxetil Impurity 21 (CAS CATO-C4X-157921)
- Cefpodoxime Proxetil Impurity 34 (CAS CATO-C4X-157934)
- Cefpodoxime impurity 68 (CAS CATO-C4X-157968)
- Cefpodoxime impurity 69 (CAS CATO-C4X-157969)
- Cefpodoxime Proxetil EP Impurity H (CAS 947692-16-2)
- Cefpodoxime Impurity 47 (CAS CATO-C4X-157947)
Recommended Standards
- N-(Azido-PEG4)-N-bis(PEG4-NHS ester) (CAS 2353409-90-0)
- 488085-18-3 Fmoc-N-amido-PEG12-NHS ester MFCD21363319 (CAS 488085-18-3)
- (4,4-Dioctyl-4H-cyclopenta[2,1-b:3,4-b']dithiophene-2,6-diyl)bis(tributylstannane) (CAS 1009305-80-9)
- HIV-1 gag Protein p17 (76-84) (CAS 147468-65-3)
- Betamethasone impurity 102 (CAS CATO-C4X-1437102)
- Troxipide Impurity 25 (CAS 31648-51-8)
- Aprepitant impurity 53 (CAS 502537-39-5)
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- 58653-97-7 Methyl 2-methylglycidate methyl 2-methyloxirane-2-carboxylate (CAS 58653-97-7)
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