7-Bromo-3-hydroxybenzo[b]thiophene-2-carboxylic acid CAS 1784121-77-2
| CAS No. | 1784121-77-2 |
| Molecular Formula | C9H5BrO3S |
| Molecular Weight | 273.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
7-Bromo-3-hydroxybenzo[b]thiophene-2-carboxylic acid (CAS 1784121-77-2), molecular formula C9H5BrO3S and molecular weight 273.10 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H5BrO3S, 7-Bromo-3-hydroxybenzo[b]thiophene-2-carboxylic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 273.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C9H5BrO3S |
| Molecular Weight | 273.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 3-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)prop-2-en-1-ol (CAS 125872-73-3)
- 864528-33-6 3-(Azidomethyl)pyridine DTXSID60672500 (CAS 864528-33-6)
- Peptide 440 (CAS CATO-CPTD788440)
- Abiraterone Impurity 52 (CAS CATO-C4X-107052)
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