2,3-Dibromo-4-methylthiophene CAS 125257-38-7
| CAS No. | 125257-38-7 |
| Molecular Formula | C5H4Br2S |
| Molecular Weight | 255.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,3-Dibromo-4-methylthiophene.
CATO supplies 2,3-Dibromo-4-methylthiophene (CAS 125257-38-7), a certified reference material (molecular formula C5H4Br2S, MW 255.96 g/mol) for analytical method development and quality control.
Owing to sulfur-containing functionality, bromine substitution, 2,3-Dibromo-4-methylthiophene is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 255.96 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.
CATO manufactures 2,3-Dibromo-4-methylthiophene 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 | C5H4Br2S |
| Molecular Weight | 255.96 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Dibromo Standards
- 2,3-Dibromo-5-methylthiophene (CAS 30319-03-0)
- 2,4-Dibromo-3-methylthiophene (CAS 53119-66-7)
- 3,5-Dibromo-2-methylthiophene (CAS 29421-73-6)
- 2,2-Dibromo-3-cyanopropionamide (CAS 143111-81-3)
- (4,5-Dibromo-1H-imidazol-2-yl)methanol (CAS 193066-54-5)
- 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one (CAS 33549-66-5)
- 3,5-Dibromo-5,6-dihydropyran-2-one (CAS 137776-72-8)
- (4,5-Dibromo-furan-2-yl)-methanol (CAS 19303-43-6)
Recommended Standards
- 4-Bromo-3,5-dichlorobenzene-1,2-diamine (CAS 98138-54-6)
- [3,5-Difluoro-2-(2,2,2-trifluoroethoxy)phenyl]boronic acid (CAS 936250-26-9)
- [2-(Difluoromethoxy)-5-(trifluoromethyl)phenyl]boronic acid (CAS 958451-77-9)
- 2-Bromo-4-(bromomethyl)thiophene (CAS 73919-93-4)
- 2-azabicyclo[3.1.1]heptane (CAS 24875-04-5)
- 1-(Furan-3-ylmethyl)-3-(thiophen-2-yl)-1-(thiophen-2-ylmethyl)urea (CAS 1421456-76-9)
- Fmoc-Phe-Lys(Boc)-PAB-PNP (CAS 1646299-50-4)
- 5873-90-5 A832000 benzenecarboximidic acid methyl ester hydrochloride methyl benzenecarboximidate hydrochloride (CAS 5873-90-5)
- 4-(4-Ethoxyphenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazole-3-thiol (CAS 111114-78-4)
- Benzyl 10H-phenoxazine-10-carboxylate (CAS 1407632-07-8)
- trans-2-(2-Ethylbenzoyl)cyclohexane-1-carboxylic acid (CAS 733742-76-2)
- 5-Aminoquinolin-3-ol (CAS 1261529-03-6)
- 7782-42-5 4QQN74LH4O Graphite Tinnitus C.I. 77265 H 451 S 1 S 1 (Graphite) C.I. Pigment Black 10 Aerodag G AG 1500 Aquadag AS 1 AT 20 ATJ-S ATJ-S graphite Black lead Canlub CB 50 Ceylon Black Lead CPB 5000 DC 2 EG 0 EINECS 231-955-3 Electrographite EXP-F Fortafil 5Y GK 2 GK 3 GP 60 GP 60S GP 63 Grafoil Grafoil GTA Graphite (all forms except graphite fibers) Graphnol N 3M GS 2 GY 70 Hitco HMG 50 IG 11 Korobon MG 1 Mineral carbon MPG 6 Papyex PG 50 Plumbago Plumbago (graphite) Pyro-Carb 406 Rocol X 7119 Schungite Shungite Silver graphite SKLN 1 Stove Black Swedish Black Lead Ucar 38 VVP 66-95 Graphitic acid UNII-4QQN74LH4O HSDB 7713 CCRIS 9467 EC 231-955-3 Graphite, natural Graphite (natural), dust Graphite (synthetic) Graphite, synthetic (CAS 7782-42-5)
- Peptide 439 (CAS CATO-CPTD788439)
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