Cefalotin Impurity 6 CAS 35565-06-1
| CAS No. | 35565-06-1 |
| Molecular Formula | C17H18N2O7S2 |
| Molecular Weight | 426.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Cefalotin Impurity 6 (CAS 35565-06-1), a pharmacopoeial impurity reference standard (molecular formula C17H18N2O7S2, MW 426.46 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Cefalotin Impurity 6 (C17H18N2O7S2) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C17H18N2O7S2 |
| Molecular Weight | 426.46 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Cefalotin Standards
- Cefalotin Impurity 10 (CAS CATO-C4X-128410)
- Cefalotin Impurity 5 (CAS 3432-90-4)
- Cefalotin Impurity 7 (CAS CATO-C4X-12847)
- Cefalotin EP Impurity B (CAS 5935-65-9)
- Cefalotin EP Impurity A (CAS 34691-02-6)
- Cefalotin EP Impurity C/Cefoperazone EP Impurity E/Cefazolin EP Impurity H (CAS 957-68-6)
- Cefalotin Impurity 9 (CAS CATO-C4X-12849)
- Cefalotin EP Impurity B (Na) (CAS 5547-29-5)
Recommended Standards
- Fmoc-D-Trp-OH (CAS 86123-11-7)
- Fosfomycin Impurity 70 (CAS CATO-C4X-131670)
- Xanthalin (CAS CATO-C3D-263265)
- Safinamide Impurity 36 (CAS CATO-C4X-159011)
- Loratadine Impurity 48 (CAS CATO-C4X-142648)
- Lifitegrast Impurity 109 (CAS CATO-C4X-2409109)
- Alprazolam Impurity 16 (CAS CATO-C4X-146016)
- Phenol-formaldehyde resin (CAS 9003-35-4)
- 2-[(3,4-Dimethoxybenzyl)amino]-1-(4-fluorophenyl)-1-phenyl-1-ethanol (CAS 338771-55-4)
- Cefuroxime Impurity 82 (CAS CATO-C4X-124582)
- 6,7-Dichloro-4-(4-chlorophenyl)-2-(2,4-dichloro-5-methoxyphenyl)-1,2-dihydrophthalazin-1-one (CAS 400087-13-0)
- Clevidipine Impurity 31 (CAS 1207068-16-3)
- 3-amino-1H,2H-benzo[f]quinazolin-1-one (CAS 7066-25-3)
- Tirzepatide(sodium salt) (CAS 2023788-19-2(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