1-(3,4-Dichlorothiophen-2-yl)ethan-1-one CAS 57681-58-0
| CAS No. | 57681-58-0 |
| Molecular Formula | C6H4Cl2OS |
| Molecular Weight | 195.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 195.07 g/mol gives 1-(3,4-Dichlorothiophen-2-yl)ethan-1-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-(3,4-Dichlorothiophen-2-yl)ethan-1-one (CAS 57681-58-0) is a high-purity analytical reference standard with the molecular formula C6H4Cl2OS and a molecular weight of 195.07 g/mol.
Based on its molecular formula C6H4Cl2OS, 1-(3,4-Dichlorothiophen-2-yl)ethan-1-one contains sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 195.07 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 1-(3,4-Dichlorothiophen-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.
Physical & Chemical Properties
| Molecular Formula | C6H4Cl2OS |
| Molecular Weight | 195.07 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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 | Cl-containing |
| Sulfur Atoms | 1 |
Related Dichlorothiophen Standards
- 1-(4,5-Dichlorothiophen-3-yl)ethan-1-one (CAS 123418-68-8)
- 1-(4,5-Dichlorothiophen-2-yl)ethanone (CAS 57681-59-1)
- 1-(2,5-Dichlorothiophen-3-yl)ethan-1-amine (CAS 603951-46-8)
- (4,5-Dichlorothiophen-2-yl)boronic acid (CAS 1190737-21-3)
- (S)-1-(2,5-Dichlorothiophen-3-yl)ethan-1-ol (CAS 1567870-68-1)
- (R)-1-(2,5-Dichlorothiophen-3-yl)ethan-1-ol (CAS 867288-34-4)
- 2,5-dichlorothiophen-3-ylboronic acid (CAS 177735-28-3)
- (2,5-dichlorothiophen-3-yl)methanol (CAS 219765-84-1)
Recommended Standards
- 2-Chlorobenzene-1-sulfinyl chloride (CAS 1852086-12-4)
- 1-(3,5-Dichloro-thiophen-2-yl)-ethanone (CAS 89281-26-5)
- 3,5-Dichloro-4-mercaptophenol (CAS 1803611-46-2)
- 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2,5-dihydro-1H-pyrrole (CAS 1799330-80-5)
- 1-Benzyl-3,3-difluoropiperidine (CAS 741288-41-5)
- 4-[4-(2-Methoxy-ethyl)-4h-[1,2,4]triazol-3-yl]-piperidine (CAS 1249448-52-9)
- 4-Chloro-5-(2-methoxyethoxy)pyridazin-3(2H)-one (CAS 1346697-64-0)
- 1-[[(1,1-Dimethylethoxy)carbonyl]amino]-3-cyclopentene-1-carboxylic acid 1,1-dimethylethyl ester (CAS 521964-59-0)
- 5-Cyclobutoxynicotinic acid (CAS 1385696-32-1)
- n,3,5-Trimethylbenzenesulfonamide (CAS 1248079-31-3)
- 4-Bromo-5-(tert-butyl)-1H-pyrazol-3-amine (CAS 110086-18-5)
- 2-(3,4-Difluorophenyl)azepane (CAS 946726-82-5)
- 3-[(2-Methoxy-4-methylphenoxy)methyl]pyrrolidinehydrochloride (CAS 1219964-01-8)
- Tirzepatide Impurity 13 (CAS CATO-C4X-324013)
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