N,N’-(3-Chloro-4-nitro-1,2-phenylene)bis(4-methylbenzenesulfonamide) CAS 143334-89-8
| CAS No. | 143334-89-8 |
| Molecular Formula | C20H18ClN3O6S2 |
| Molecular Weight | 495.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
N,N’-(3-Chloro-4-nitro-1,2-phenylene)bis(4-methylbenzenesulfonamide) (CAS 143334-89-8), molecular formula C20H18ClN3O6S2 and molecular weight 495.96 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of N,N’-(3-Chloro-4-nitro-1,2-phenylene)bis(4-methylbenzenesulfonamide) (C20H18ClN3O6S2) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. 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. 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 | C20H18ClN3O6S2 |
| Molecular Weight | 495.96 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Recommended Standards
- 1-(5-Chloro-2-methoxyphenyl)-5-oxo-N-(1-(3-(pyridin-4-yl)-1,2,4-oxadiazol-5-yl)cyclohexyl)pyrrolidine-3-carboxamide (CAS 1396679-43-8)
- 1-Iodoperfluoro-5-methylhexane (CAS 3486-08-6)
- N,N’-(4-Chloro-5-nitro-1,2-phenylene)bis(4-methylbenzenesulfonamide) (CAS 113269-04-8)
- Perfluoro-n-heptyl iodide (CAS 335-58-0)
- 1-(Difluoromethyl)-5-(1H-imidazol-5-yl)-1H-1,2,4-triazole (CAS 2845318-36-5)
- (4-(((Tert-butoxycarbonyl)(cyclopentyl)amino)methyl)-2-fluorophenyl)boronic acid (CAS 1704096-68-3)
- 2-Chloro-3-methyl-1,1'-biphenyl (CAS 19482-23-6)
- n-(Benzo[d][1,3]dioxol-5-ylmethyl)pyrazin-2-amine (CAS 930859-14-6)
- 3-bromo-8-methyl-naphthalen-1-amine (CAS 2387599-23-5)
- 5-[Benzyl(methyl)amino]-2-pentanone (CAS 92196-15-1)
- (2E)-1-(2-Methylphenyl)-3-[4-(propan-2-yl)phenyl]prop-2-en-1-one (CAS 1623003-45-1)
- Diphenoxylate EP Impurity C (CAS 39186-58-8)
- 3-((2-Fluorobenzyl)oxy)-5-methoxythiophene-2-carboxylic acid (CAS 1708250-95-6)
- Atrial Natriuretic Peptide (ANP)(1-28) Alpha (Human, Ovine, Canine) (CAS 91917-63-4)
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