(E)-[2-(4-Chlorobenzenesulfonyl)ethylidene](methoxy)amine CAS 338403-89-7
| CAS No. | 338403-89-7 |
| Molecular Formula | C9H10ClNO3S |
| Molecular Weight | 247.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| 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.
(E)-[2-(4-Chlorobenzenesulfonyl)ethylidene](methoxy)amine (CAS 338403-89-7), molecular formula C9H10ClNO3S and molecular weight 247.70 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, (E)-[2-(4-Chlorobenzenesulfonyl)ethylidene](methoxy)amine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 247.70 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C9H10ClNO3S |
| Molecular Weight | 247.70 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related E Standards
- Methyl 2-(4-chlorobenzenesulfonyl)acetate (CAS 15446-25-0)
- 3-(2-Chlorobenzenesulfonyl)propanoic acid (CAS 554404-42-1)
- 1-(2-CHlorobenzenesulfonyl)pyrrolidine (CAS 1197180-96-3)
- [(E)-2-(4-Chlorobenzenesulfonyl)ethenyl]dimethylamine (CAS 338395-16-7)
- 3-Acetyl-5-chlorobenzenesulfonyl chloride (CAS 1152589-88-2)
- 5-Acetyl-2-chlorobenzenesulfonyl chloride (CAS 3511-47-5)
- 4-(4-Chlorobenzenesulfonyl)-1h-pyrazol-5-amine (CAS 30036-43-2)
- 1-(2-CHlorobenzenesulfonyl)piperidine (CAS 1071355-46-8)
Recommended Standards
- 4-(Dimethylcarbamoyl)benzene-1-sulfonyl chloride (CAS 190711-50-3)
- 2-(Allyloxy)-5-chlorobenzenesulfonamide (CAS 82020-73-3)
- 3-(Dimethylsulfamoyl)benzoyl Chloride (CAS 188674-88-6)
- 2-(Allyloxy)-6-chlorobenzenesulfonamide (CAS 89412-52-2)
- 1-(3,5-Dimethylphenyl)-1H-1,2,4-triazole-3-carboxylic acid (CAS 1245644-75-0)
- 2-[2,6-Dichloro-4-(trifluoromethyl)phenyl]-1,2-dihydrophthalazin-1-one (CAS 866048-84-2)
- 6-(1-Methyl-1H-pyrazol-4-yl)-4-(tetrahydro-2H-pyran-4-yl)-N-(4-(trifluoromethyl)pyridin-2-yl)pyridin-2-amine (CAS 1496581-58-8)
- 6-bromo-5-fluoro-2-methyl-2H-indazole (CAS 1286734-87-9)
- 4-chloro-1-methyl-pyrazolo[4,3-c]pyridine-6-carbonyl chloride (CAS 2633010-65-6)
- Methyl 2-[(4-chlorophenyl)sulfonyl]-6-oxohexahydro-4-pyridazinecarboxylate (CAS 339096-87-6)
- (2R)-2-amino-3-quinoxalin-2-yl-propanoic acid (CAS 2002401-01-4)
- Cbz-D-allo-isoleucine (CAS 55723-45-0)
- 1-(3-Chloropropyl)-3,5-dimethyl-1h-pyrazole (CAS 81930-34-9)
- D-Ile12-Tirzepatide (CAS CATO-CPTD788921)
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