Cefixime Impurity 89 CAS CATO-C4X-113989
| CAS No. | CATO-C4X-113989 |
| Molecular Formula | C17H19N5O8S2 |
| Molecular Weight | 485.49 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 Cefixime Impurity 89.
CATO supplies Cefixime Impurity 89 (CAS CATO-C4X-113989), a pharmacopoeial impurity reference standard (molecular formula C17H19N5O8S2, MW 485.49 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C17H19N5O8S2, Cefixime Impurity 89 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 485.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), Cefixime Impurity 89 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C17H19N5O8S2 |
| Molecular Weight | 485.49 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefixime Standards
- Cefixime Impurity 88 (CAS CATO-C4X-113988)
- Cefixime Impurity 90 (CAS CATO-C4X-113990)
- Cefixime Impurity 91 (CAS CATO-C4X-113991)
- Cefixime Impurity 50 (CAS 2682217-22-5)
- Cefixime Impurity 111 (CAS CATO-C4X-1139111)
- Cefixime Impurity 52 (CAS CATO-C4X-113952)
- Cefixime Impurity 61 (CAS CATO-C4X-113961)
- Cefixime Impurity 53 (CAS CATO-C4X-113953)
Recommended Standards
- N-(9-((2R,3R,4R,5R)-4-Hydroxy-5-(hydroxymethyl)-3-((4-methoxytetrahydro-2H-pyran-4-yl)oxy)tetrahydrofuran-2-yl)-9H-purin-6-yl)benzamide (CAS 80185-98-4)
- Fmoc-Acq-OH (CAS 204322-92-9)
- Ceftazidime Impurity 110 (CAS CATO-C4X-1212110)
- 5-(4-Biphenylyl)-5-[4-(4-nitrophenyl)-1-piperazinyl]pyrimidine-2,4,6(1H,3H,5H)-trione (CAS 261956-22-3)
- 2-Cyanophenothiazine Impurity 1 (CAS CATO-C4X-29071)
- Baloxavir Impurity 75 (CAS CATO-C4X-210875)
- Amorolfine Impurity 83 (CAS CATO-C4X-154283)
- 4-(3-Bromopropyl)-1,2-difluorobenzene (CAS 1057678-57-5)
- 4-Bromo-1-(sec-butyl)-5-(methoxymethyl)-1H-pyrazole (CAS 1856096-93-9)
- (E)-Methyl 2-(2-(chloromethyl)phenyl)-3-methoxyacrylate (CAS 117428-51-0)
- 4-Chloro-3,5,6-trimethylpyridazine (CAS 24307-79-7)
- Capecitabine EP Impurity E (CAS 162204-30-0)
- 1-(3-Hydroxypyridin-2-yl)-2,5-dimethyl-1H-pyrrole-3-carbaldehyde (CAS 876717-25-8)
- Peptide Impurity 28 (CAS 1350456-64-2)
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