Cefixime Impurity 42 CAS CATO-C4X-113942
| CAS No. | CATO-C4X-113942 |
| Molecular Formula | C16H16N6O6S2 |
| Molecular Weight | 452.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Cefixime Impurity 42 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.
CATO supplies Cefixime Impurity 42 (CAS CATO-C4X-113942), a pharmacopoeial impurity reference standard (molecular formula C16H16N6O6S2, MW 452.46 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Cefixime Impurity 42 (C16H16N6O6S2) 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 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 452.46 g/mol, it falls into the moderately-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.
Physical & Chemical Properties
| Molecular Formula | C16H16N6O6S2 |
| Molecular Weight | 452.46 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Cefixime Standards
- Cefixime Impurity 41 (CAS CATO-C4X-113941)
- Cefixime Impurity 27 (CAS 29126-11-2)
- Cefixime (CAS 79350-37-1)
- Cefixime Impurity 14 (CAS CATO-C4X-113914)
- Cefixime Impurity 15 (CAS CATO-C4X-113915)
- Cefixime EP Impurity C (CAS 108691-83-4)
- Cefixime Impurity 54 (CAS CATO-C4X-113954)
- Cefixime EP Impurity D (CAS 97164-56-2)
Recommended Standards
- Aztreonam Impurity 24 (CAS CATO-C4X-152224)
- Rivaroxaban Impurity 88 (CAS CATO-C4X-109088)
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- Rivaroxaban Impurity 28 (CAS 2206360-74-7)
- Sulfadoxine Impurity 10 (CAS CATO-C4X-279110)
- Roxatidine Impurity 41 (CAS CATO-C4X-121341)
- Ilaprazole Impurity 142 (CAS CATO-C4X-1130142)
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- Clindamycin Palmitate Impurity 108 (CAS CATO-C4X-1341108)
- N-(4-Isopropylbenzyl)-1-(4-methoxyphenyl)-1H-benzo[d]imidazol-5-amine (CAS 489416-12-8)
- 3-Hydroxy-5-nitrophenylboronic Acid Pinacol Ester (CAS 1158236-73-7)
- Palmitoyl Hexapeptide-12 TFA salt (CAS 171263-26-6(Free Base))
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