Cefotaxime Impurity 65 CAS CATO-C4X-120165
| CAS No. | CATO-C4X-120165 |
| Molecular Formula | C19H29N3O7S |
| Molecular Weight | 443.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Cefotaxime Impurity 65 (CAS CATO-C4X-120165), a pharmacopoeial impurity reference standard (molecular formula C19H29N3O7S, MW 443.51 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Cefotaxime Impurity 65 (C19H29N3O7S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 443.51 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures Cefotaxime Impurity 65 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 | C19H29N3O7S |
| Molecular Weight | 443.51 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefotaxime Standards
- Cefotaxime Impurity 27 (CAS CATO-C4X-120127)
- Cefotaxime Impurity 28 (CAS CATO-C4X-120128)
- Cefotaxime EP Impurity D (CAS 63527-53-7)
- Cefotaxime Impurity 81 (CAS CATO-C4X-120181)
- Cefotaxime (CAS 63527-52-6)
- Cefotaxime Impurity 66 (CAS CATO-C4X-120166)
- Cefotaxime Impurity 17 (CAS CATO-C4X-120117)
- Cefotaxime Impurity 87 (CAS CATO-C4X-120187)
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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