4-Bromobenzo[b]thiophen-3(2H)-one CAS 67866-90-4
| CAS No. | 67866-90-4 |
| Molecular Formula | C8H5BrOS |
| Molecular Weight | 229.09 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.
4-Bromobenzo[b]thiophen-3(2H)-one (CAS 67866-90-4) is a high-purity analytical reference standard with the molecular formula C8H5BrOS and a molecular weight of 229.09 g/mol.
The molecular framework of 4-Bromobenzo[b]thiophen-3(2H)-one (C8H5BrOS) is characterized by sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures 4-Bromobenzo[b]thiophen-3(2H)-one 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 | C8H5BrOS |
| Molecular Weight | 229.09 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromobenzo Standards
- 3-Bromobenzo[b]thiophen-5-ol (CAS 101494-83-1)
- 4-Bromobenzo[b]thiophen-7-ol (CAS 1191900-64-7)
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- 6-Bromobenzo[b]thiophen-7-ol (CAS 87279-85-4)
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