3-bromo-4-ethoxybenzene-1-sulfonamide CAS 749253-28-9
| CAS No. | 749253-28-9 |
| Molecular Formula | C8H10BrNO3S |
| Molecular Weight | 280.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-bromo-4-ethoxybenzene-1-sulfonamide (CAS 749253-28-9), molecular formula C8H10BrNO3S and molecular weight 280.14 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H10BrNO3S, 3-bromo-4-ethoxybenzene-1-sulfonamide contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 280.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures 3-bromo-4-ethoxybenzene-1-sulfonamide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H10BrNO3S |
| Molecular Weight | 280.14 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 3-BRomo-2-hydroxy-n,n-dimethyl-benzenesulfonamide (CAS 2065250-70-4)
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- 2-Bromo-6-phenylimidazo[2,1-b][1,3,4]thiadiazole (CAS 88013-15-4)
- 3-Bromo-N-(2-hydroxyethyl)benzenesulfonamide (CAS 911111-96-1)
- 4-ethynyl-3-methylpyridine (CAS 30413-60-6)
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- 2-Bromo-6-ethoxyaniline hydrochloride (CAS 1820686-63-2)
- N-Acetyl-β-alanine N-Hydroxysuccinimide Ester (CAS 154194-69-1)
- (-)-β-Sesquiphellandrene (CAS 20307-83-9)
- 5-Ethyl-2-fluoroaniline (CAS 1583-89-7)
- 3-Amino-N-(2-bromo-4,6-difluorophenyl)-6,7-dihydro-5H-cyclopenta[b]thieno[3,2-e]pyridine-2-carboxamide (CAS 497061-48-0)
- 2-chloro-7H-pyrrolo[2,3-d]pyrimidin-4-amine (CAS 1192711-88-8)
- 2,2,2-Trifluoro-1-(5-methyl-1h-indol-3-yl)ethan-1-one (CAS 858515-93-2)
- Hexapeptide-10 (CAS 146439-94-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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