Cefamandole Impurity 5 CAS 53432-40-9
| CAS No. | 53432-40-9 |
| Molecular Formula | C8H6Cl2O |
| Molecular Weight | 189.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Cefamandole Impurity 5 (CAS 53432-40-9), a certified reference material (molecular formula C8H6Cl2O, MW 189.04 g/mol) for analytical method development and quality control.
The molecular framework of Cefamandole Impurity 5 (C8H6Cl2O) is characterized by a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C8H6Cl2O |
| Molecular Weight | 189.04 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
Related Cefamandole Standards
- Cefamandole Impurity 8 (CAS CATO-C4X-12218)
- Cefamandole Impurity 9 (CAS 29169-63-9)
- Cefamandole Impurity 10 (CAS 29169-64-0)
- Cefamandole Impurity N2 (CAS 80543-51-7)
- Cefamandole Nafate EP Impurity D (CAS 13183-79-4)
- Cefamandole Impurity 20 (CAS 49753-68-6)
- Cefamandole Impurity 33 (CAS CATO-C4X-122133)
- Cefamandole Impurity 14 (CAS CATO-C4X-122114)
Recommended Standards
- 6,8-Dichloro-2,3-dihydroimidazo[1,2-a]pyridine (CAS 63111-50-2)
- Cis-2,3-dichloro-2,3-dihydrobenzofuran (CAS 63361-58-0)
- 5-Chloro-2-methylbenzoyl Chloride (CAS 21900-40-3)
- Imatinib Impurity 29 (CAS 21900-30-1)
- 1-(5-Bromobenzofuran-2-yl)-2,2,2-trifluoroethanol (CAS 1391737-70-4)
- 4-Chloro-6-(6-(trifluoromethyl)pyridin-3-yl)pyrimidine (CAS 1590398-07-4)
- 5-Fluoro-1H-indol-3-amine hydrochloride (CAS 2624138-24-3)
- Deoxycholic acid Impurity 25 (CAS 2826251-67-4)
- 6,7-Dihydroxycoumarin (CAS 305-01-1)
- 3-Cyclopentyl-2-formamidopropanoic acid (CAS 1340447-88-2)
- rac 1-Benzyl-2-methyl-piperazine, 98% (CAS 29906-54-5)
- (2R,3R,4S,5S)-2-(6-Amino-9H-purin-9-yl)-5-((R)-fluoro(methylthio)methyl)tetrahydrofuran-3,4-diol (CAS 119771-21-0)
- Tert-butyl 4-((3-fluoro-4-methoxybenzyl)amino)piperidine-1-carboxylate (CAS 1349717-80-1)
- Semaglutide impurity 47 (CAS CATO-C4X-222647)
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