5-Bromo-2-hydroxybenzenesulfonyl chloride CAS 123221-93-2
| CAS No. | 123221-93-2 |
| Molecular Formula | C6H4BrClO3S |
| Molecular Weight | 271.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C6H4BrClO3S, 5-Bromo-2-hydroxybenzenesulfonyl chloride contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 271.52 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).
5-Bromo-2-hydroxybenzenesulfonyl chloride (CAS 123221-93-2) is a high-purity analytical reference standard with the molecular formula C6H4BrClO3S and a molecular weight of 271.52 g/mol.
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 5-Bromo-2-hydroxybenzenesulfonyl chloride 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 | C6H4BrClO3S |
| Molecular Weight | 271.52 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1992 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 3-Bromo-4-hydroxybenzenesulfonyl chloride (CAS 1055325-23-9)
- Methyl 5-bromo-4-chloro-3-hydroxythiophene-2-carboxylate (CAS 1095124-55-2)
- 5-Bromo-2-chloropyridine-3-sulfonamide (CAS 1250699-72-9)
- 4-Bromo-2-hydroxybenzene-1-sulfonyl chloride (CAS 1261497-41-9)
- 4-Bromo-3-hydroxybenzene-1-sulfonyl chloride (CAS 1261756-67-5)
- 5-Bromo-4-chloropyridine-3-sulfonamide (CAS 1352508-11-2)
- 6-Bromo-2-chloropyridine-3-sulfonamide (CAS 1707371-82-1)
- 5-Bromo-4-chloro-2-(methylsulfonyl)pyrimidine (CAS 79091-24-0)
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- Methyl 2-amino-5-bromo-3-(trifluoromethyl)benzoate (CAS 1805449-93-7)
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- cis-2-(tert-Butoxycarbonyl)-2-azaspiro[5.5]undecane-9-carboxylic acid (CAS 1251008-89-5)
- 4-(1-Methyl-3-propylpyrrolidin-3-yl)benzene-1,2-diol (CAS 1507-78-4)
- Semaglutide impurity 46 (CAS CATO-C4X-222646)
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