(4-Bromoisothiazol-3-yl)methanol CAS 24340-79-2
| CAS No. | 24340-79-2 |
| Molecular Formula | C4H4BrNOS |
| Molecular Weight | 194.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
(4-Bromoisothiazol-3-yl)methanol (CAS 24340-79-2), molecular formula C4H4BrNOS and molecular weight 194.05 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (4-Bromoisothiazol-3-yl)methanol (C4H4BrNOS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 194.05 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C4H4BrNOS |
| Molecular Weight | 194.05 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.) | 1963 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bromoisothiazol Standards
Recommended Standards
- (2-Bromothiazol-4-yl)methanol (CAS 5198-86-7)
- (5-Bromo-1,3,4-thiadiazol-2-yl)methanamine (CAS 933690-22-3)
- (5-Bromothiazol-4-yl)methanol (CAS 912639-68-0)
- 5-Bromo-3-(methylthio)-1H-1,2,4-triazole (CAS 15777-62-5)
- 3-(3,4-Dimethoxyphenyl)-5-((4-methoxybenzyl)thio)-4H-1,2,4-triazol-4-amine (CAS 585553-48-6)
- Chromanol 293B >=98% (HPLC), powder (CAS 163163-23-3)
- 2-(2-Chloro-4-nitrobenzamido)benzoic acid (CAS 416887-58-6)
- 3-((Ethylsulfonyl)methyl)aniline (CAS 1153557-35-7)
- 1-(2-Bromo-4-fluorophenyl)-1H-pyrrole (CAS 383137-41-5)
- 3-(tert-Butoxy)-4-(tert-butyl)phenol (CAS 1243326-99-9)
- n-Octatetracontane (CAS 7098-26-2)
- 1,1-difluorospiro[2.3]hexane-5-carboxylic acid (CAS 1955514-17-6)
- 2-Chloro-6-phenylpyrimidine-4-carboxylic acid (CAS 1181985-99-8)
- Semaglutide impurity 86 (CAS CATO-C4X-152686)
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