Ethyl 3-(N-(4-ethoxyphenyl)sulfamoyl)benzo[b]thiophene-2-carboxylate CAS 932303-52-1
| CAS No. | 932303-52-1 |
| Molecular Formula | C19H19NO5S2 |
| Molecular Weight | 405.49 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.
Ethyl 3-(N-(4-ethoxyphenyl)sulfamoyl)benzo[b]thiophene-2-carboxylate (CAS 932303-52-1), molecular formula C19H19NO5S2 and molecular weight 405.49 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C19H19NO5S2, Ethyl 3-(N-(4-ethoxyphenyl)sulfamoyl)benzo[b]thiophene-2-carboxylate contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 405.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C19H19NO5S2 |
| Molecular Weight | 405.49 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Recommended Standards
- Ethyl 3-(N-(2-methoxy-5-methylphenyl)sulfamoyl)benzo[b]thiophene-2-carboxylate (CAS 932303-43-0)
- n-(2-(4-Methylpiperazin-1-yl)phenyl)-3-(3-(p-tolyl)-1,2,4-oxadiazol-5-yl)propanamide (CAS 900132-10-7)
- Ethyl 3-(N-(2-ethoxyphenyl)sulfamoyl)benzo[b]thiophene-2-carboxylate (CAS 932303-61-2)
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