1-(5-bromothiophen-2-yl)-2-phenylethan-1-one CAS 56824-81-8
| CAS No. | 56824-81-8 |
| Molecular Formula | C12H9BrOS |
| Molecular Weight | 281.17 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.
1-(5-bromothiophen-2-yl)-2-phenylethan-1-one (CAS 56824-81-8), molecular formula C12H9BrOS and molecular weight 281.17 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(5-bromothiophen-2-yl)-2-phenylethan-1-one (C12H9BrOS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 281.17 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 1-(5-bromothiophen-2-yl)-2-phenylethan-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.
Physical & Chemical Properties
| Molecular Formula | C12H9BrOS |
| Molecular Weight | 281.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related bromothiophen Standards
- 1-((3-Bromothiophen-2-yl)methylene)-2-phenylhydrazine (CAS 838820-76-1)
- 1-[4-(5-bromothiophen-2-yl)phenyl]ethan-1-one (CAS 929972-12-3)
- 6-(5-Bromothiophen-2-yl)-2-oxo-1,2-dihydropyridine-3-carbonitrile (CAS 1144460-95-6)
- n-((4-Bromothiophen-2-yl)methyl)-3-(methylthio)propan-1-amine (CAS 1342974-26-8)
- 2-(2-(((5-Bromothiophen-2-yl)methyl)amino)ethoxy)ethan-1-ol (CAS 1042621-77-1)
- n-((4-Bromothiophen-2-yl)methyl)-4-methylaniline (CAS 1039957-97-5)
- n-(1-(5-Bromothiophen-2-yl)ethyl)aniline (CAS 1178334-93-4)
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Recommended Standards
- 1-[4-(3-Bromothien-2-yl)phenyl]ethanone (CAS 937796-01-5)
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- (3-Bromo-4-methylphenyl)(thiophen-2-yl)methanone (CAS 81140-51-4)
- 1-[5-(4-bromophenyl)thiophen-2-yl]ethan-1-one (CAS 51335-89-8)
- 1-(n-Butyl-N-methylsulfamoyl)pyrrolidine-3-carboxylic acid (CAS 1830328-41-0)
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