1-(3,4-Dibromothiophen-2-yl)ethan-1-one CAS 57681-57-9
| CAS No. | 57681-57-9 |
| Molecular Formula | C6H4Br2OS |
| Molecular Weight | 283.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-(3,4-Dibromothiophen-2-yl)ethan-1-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.
1-(3,4-Dibromothiophen-2-yl)ethan-1-one (CAS 57681-57-9), molecular formula C6H4Br2OS and molecular weight 283.97 g/mol, is a CATO reference standard with documented purity and traceability.
1-(3,4-Dibromothiophen-2-yl)ethan-1-one (C6H4Br2OS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; 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 | C6H4Br2OS |
| Molecular Weight | 283.97 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Dibromothiophen Standards
- 1-(4,5-Dibromothiophen-3-yl)ethanone (CAS 1823367-47-0)
- 1-(3,5-Dibromothiophen-2-yl)ethan-1-one (CAS 80775-52-6)
- 1-(3,4-Dibromothiophen-2-yl)-N-methylmethanamine (CAS 1394022-22-0)
- 1-(3,4-Dibromothiophen-2-yl)ethan-1-amine (CAS 1394023-36-9)
- (3,5-Dibromothiophen-2-yl)boronic acid (CAS 1095177-31-3)
- 3,4-Dibromothiophen-2-boronic acid (CAS 1256355-38-0)
- 1-(3,4-Dibromothiophen-2-yl)ethan-1-ol (CAS 1394021-42-1)
- (2,5-Dibromothiophen-3-yl)methanol (CAS 161490-95-5)
Recommended Standards
- 4,6-Dibromo-2-(methylthio)pyrimidine (CAS 126826-36-6)
- 2,2-Dibromo-1-(thiophen-2-yl)ethan-1-one (CAS 68672-88-8)
- 2-Bromo-1-(5-bromo-2-thienyl)ethanone (CAS 10531-44-9)
- 2-Acetyl-4,5-dibromothiophene (CAS 7209-12-3)
- MEthyl 3-benzenesulfonamidopropanoate (CAS 91819-18-0)
- 4-((4-Chloro-6-((furan-2-ylmethyl)amino)-1,3,5-triazin-2-yl)amino)phenol (CAS 311788-82-6)
- 5-Bromo-2-cyclopropylmethoxy-4-methyl-pyridine (CAS 1600268-01-6)
- 2-Chloro-N-(4-(N-ethylacetamido)cyclohexyl)acetamide (CAS 1353946-96-9)
- 3-Amino-N,N-dimethylbenzothioamide (CAS 1887765-51-6)
- N'-(3,5-Dibromopyrazin-2-yl)-N-hydroxyformimidamide (CAS 60420-05-5)
- 2-[3,5-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 365564-05-2 ACN-044048 (CAS 365564-05-2)
- 2-Bromo-3-chloroisonicotinaldehyde (CAS 1224604-18-5)
- 2-((4-(Benzyl(cyclopropyl)amino)cyclohexyl)amino)ethanol (CAS 1353967-28-8)
- Semaglutide impurity 196 (CAS CATO-C4X-2226196)
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