2-Bromo-4-(methylsulfonyl)thiophene CAS 731017-72-4
| CAS No. | 731017-72-4 |
| Molecular Formula | C5H5BrO2S2 |
| Molecular Weight | 241.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Bromo-4-(methylsulfonyl)thiophene (CAS 731017-72-4), molecular formula C5H5BrO2S2 and molecular weight 241.13 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, 2-Bromo-4-(methylsulfonyl)thiophene is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 241.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 2-Bromo-4-(methylsulfonyl)thiophene 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 | C5H5BrO2S2 |
| Molecular Weight | 241.13 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 2 |
Related Bromo Standards
- 5-Bromo-2-(pyrrolidin-1-yl)aniline (CAS 1016795-07-5)
- 5-Bromo-N-cyclopentyl-2-pyridinamine (CAS 1036468-34-4)
- 2-Bromo-6-(pyrrolidin-1-ylmethyl)pyridine (CAS 1113040-40-6)
- 2-Bromo-5-(piperidin-1-yl)pyridine (CAS 1142197-44-1)
- 2-Bromo-5-(piperidin-4-yl)pyridine (CAS 1159814-58-0)
- 2-Bromo-6-(piperidin-4-yl)pyridine (CAS 1159814-62-6)
- 5-Bromo-4-methyl-2-(pyrrolidin-1-yl)pyridine (CAS 1187385-95-0)
- 3-Bromo-2-methyl-6-(pyrrolidin-1-yl)pyridine (CAS 1199773-35-7)
Recommended Standards
- 2-(Bromomethyl)-6-(pyrrolidin-1-yl)pyridine (CAS 869901-04-2)
- 2-Bromo-5-(1-pyrrolidinylmethyl)-pyridine (CAS 742085-62-7)
- 2-(3-Bromophenyl)piperazine (CAS 885962-24-3)
- 2-Bromo-6-(piperidin-1-yl)pyridine (CAS 24255-97-8)
- 7-Ethoxy-2-hydroxynaphthalene (CAS 57944-44-2)
- C2 Ceramide (d18:1/2:0) (CAS 195194-58-2)
- Sodium 4,4'-(propane-2,2-diyl)diphenolate (CAS 2444-90-8)
- Jatrorrhizine Hydrochloride (CAS 6681-15-8)
- Ramelteon Impurity 51 (CAS 896736-20-2)
- 2-(tert-Butoxycarbonyl)-4-(difluoromethyl)-2-azabicyclo[2.1.1]hexane-1-carboxylic acid (CAS 2613381-87-4)
- (E)-3-(2-Methoxyphenyl)-N-(((tetrahydrofuran-2-yl)methyl)carbamothioyl)acrylamide (CAS 651013-21-7)
- (4-Methylpiperazin-1-yl)(o-tolyl)methanone (CAS 56635-66-6)
- 1,3-Benzenedicarboxylic acid, 1,3-dimethyl ester, polymer with 2,2,4-trimethyl-1,3-pentanediol (CAS 65072-12-0)
- Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 75976-10-2)
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