7-Bromobenzo[d]isothiazol-3(2H)-one 1,1-dioxide CAS 2137631-23-1
| CAS No. | 2137631-23-1 |
| Molecular Formula | C7H4BrNO3S |
| Molecular Weight | 262.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 7-Bromobenzo[d]isothiazol-3(2H)-one 1,1-dioxide 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.
CATO supplies 7-Bromobenzo[d]isothiazol-3(2H)-one 1,1-dioxide (CAS 2137631-23-1), a certified reference material (molecular formula C7H4BrNO3S, MW 262.08 g/mol) for analytical method development and quality control.
7-Bromobenzo[d]isothiazol-3(2H)-one 1,1-dioxide (C7H4BrNO3S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H4BrNO3S |
| Molecular Weight | 262.08 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, water |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bromobenzo Standards
- 6-Bromobenzo[e][1,2,3]oxathiazine 2,2-dioxide (CAS 115540-65-3)
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Recommended Standards
- ethyl 2-amino-3-bromo-5-fluorobenzoate (CAS 939993-45-0)
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- Chlorpyrifos Impurity 1 (CAS 167100-86-9)
- Cycloaspeptide A (CAS 109171-13-3)
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