N-[(E)-2-(Benzenesulfonyl)-2-nitroethenyl]-3-chloro-2-methylaniline CAS 321433-85-6
| CAS No. | 321433-85-6 |
| Molecular Formula | C15H13ClN2O4S |
| Molecular Weight | 352.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of N-[(E)-2-(Benzenesulfonyl)-2-nitroethenyl]-3-chloro-2-methylaniline is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
N-[(E)-2-(Benzenesulfonyl)-2-nitroethenyl]-3-chloro-2-methylaniline (CAS 321433-85-6), molecular formula C15H13ClN2O4S and molecular weight 352.79 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H13ClN2O4S, N-[(E)-2-(Benzenesulfonyl)-2-nitroethenyl]-3-chloro-2-methylaniline contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 352.79 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 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.
As a certified reference material (CRM), N-[(E)-2-(Benzenesulfonyl)-2-nitroethenyl]-3-chloro-2-methylaniline meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C15H13ClN2O4S |
| Molecular Weight | 352.79 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
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- Cefaclor Impurity 48 (CAS CATO-C4X-127048)
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- Chlorthalidone impurity 20 (CAS 96512-76-4)
- 2-Phenyl-1,3-dihydrobenzo[d][1,2]azaphosphole 2-sulfide (CAS 82632-06-2)
- (R)-2-(((Benzyloxy)carbonyl)amino)pentane-1,5-diyl dimethanesulfonate (CAS 478646-29-6)
- 3-(5-{[(5-Ethyl-1,3,4-thiadiazol-2-yl)amino]-carbonyl}-1,3,4-thiadiazol-2-yl)propanoic acid (CAS 1142209-50-4)
- (S)-(4,4-difluoropiperidin-2-yl)methanamine (CAS 1370514-36-5)
- N-(3,4-dichlorophenyl)-2-(3-formylphenoxy)acetamide (CAS 575499-65-9)
- 2-Chloro-5-((3-methyl-4-(m-tolyl)piperazin-1-yl)methyl)thiazole (CAS 865660-20-4)
- 2-(Benzofuran-2-yl)-2-oxoethyl 2-(methylthio)nicotinate (CAS 380165-06-0)
- 2-(2-((Benzyl(cyclopropyl)amino)methyl)pyrrolidin-1-yl)ethanol (CAS 1353976-19-8)
- (R)-(-)-2-nonanol (CAS 70419-07-7)
- Semaglutide impurity 37 (CAS CATO-C4X-222637)
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