4-Bromoisothiazol-3(2H)-one CAS 25629-52-1
| CAS No. | 25629-52-1 |
| Molecular Formula | C3H2BrNOS |
| Molecular Weight | 180.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C3H2BrNOS, 4-Bromoisothiazol-3(2H)-one contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 180.02 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 4-Bromoisothiazol-3(2H)-one (CAS 25629-52-1), a certified reference material (molecular formula C3H2BrNOS, MW 180.02 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Bromoisothiazol-3(2H)-one 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 | C3H2BrNOS |
| Molecular Weight | 180.02 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bromoisothiazol Standards
Recommended Standards
- 2-Bromothiazol-4-ol (CAS 1264034-03-8)
- 3-Bromo-1,2,4-thiadiazol-5-amine (CAS 1101173-93-6)
- 4-Bromothiazol-2(3H)-one (CAS 1086381-71-6)
- 2-Amino-5-bromo-1,3,4-thiadiazole (CAS 37566-39-5)
- 1-(4-Acetylphenyl)-N,N-diethylpiperidine-4-carboxamide (CAS 900018-90-8)
- 5-Methoxybenzo[d]thiazole-2-carbonitrile (CAS 7267-35-8)
- 7-Bromo-2-oxo-2,3,4,5-tetrahydro-1h-1-benzazepine-8-sulfonamide (CAS 1427380-75-3)
- 2-[({5-[(2-Carboxybenzoyl)amino]-1-naphthyl}amino)carbonyl]benzoic acid (CAS 129684-51-1)
- Dehydrodiconiferyl alcohol (CAS 4263-87-0)
- 2-[(5,6-Dimethyl-4-thieno[2,3-d]pyrimidinyl)thio]-N-phenethylacetamide (CAS 379246-46-5)
- 2-(BEnzyloxy)-4-chloro-1-methylbenzene (CAS 1483133-48-7)
- 5-Bromo-6-methylimidazo[1,2-a]pyrazine, 97% (CAS 1346157-10-5)
- (1R,2R,5S,6S)-tert-Butyl 4-oxo-3-azatricyclo[4.2.1.02,5]non-7-ene-3-carboxylate (CAS 871357-90-3)
- Ginseng Tetrapeptide (CAS 178553-95-2)
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