Cefixime Impurity 67 CAS CATO-C4X-113967
| CAS No. | CATO-C4X-113967 |
| Molecular Formula | C25H24N8O11S3 |
| Molecular Weight | 708.70 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Cefixime Impurity 67 (CAS CATO-C4X-113967), a pharmacopoeial impurity reference standard (molecular formula C25H24N8O11S3, MW 708.70 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C25H24N8O11S3, Cefixime Impurity 67 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 708.70 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C25H24N8O11S3 |
| Molecular Weight | 708.70 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 3 |
Related Cefixime Standards
- Cefixime Impurity 113 (CAS 119608-72-9)
- Cefixime Impurity 32 (CAS CATO-C4X-113932)
- Cefixime Impurity 33 (CAS CATO-C4X-113933)
- Cefixime Impurity 63 (CAS CATO-C4X-113963)
- Cefixime Impurity 110 (CAS CATO-C4X-1139110)
- Cefixime Impurity 18 (CAS CATO-C4X-113918)
- Cefixime Impurity 30 (CAS CATO-C4X-113930)
- Cefixime Impurity 102 (CAS CATO-C4X-1139102)
Recommended Standards
- Cefpirome Impurity 32 (CAS CATO-C4X-120732)
- Sanggenone C (CAS 80651-76-9)
- Cefpirome Impurity 23 (CAS CATO-C4X-120723)
- CAY10578 (CAS 19231-60-8)
- Ticagrelor Impurity 51 (CAS 1882095-51-3)
- Chlorthalidone impurity 19 (CAS CATO-C4X-158519)
- Lobeline Impurity 12 (CAS CATO-C4X-181812)
- [4-(4-Acetylpiperazin-1-yl-6-(Trifluoromethyl)-1,3,5-Triazin-2-Yl]Hydrazine (CAS 58892-46-9)
- Clavulanic Acid Methyl Ester-13CD3 (CAS CATO-C4X-150117)
- 3-(2,5-Dimethoxyphenyl)prop-2-en-1-ol (CAS 409367-00-6)
- N-Benzylcyclobutanamine (CAS 32861-52-2)
- 2-(Benzo[d]thiazol-2-yl)-2-methylpropanenitrile (CAS 66277-05-2)
- n-(4-Chlorophenyl)furan-2-carboxamide (CAS 1982-59-8)
- Tirzepatide-d7 Ditrifluoroacetate (CAS CATO-CPTD788698)
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