7-Oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylic acid CAS 96334-46-2
| CAS No. | 96334-46-2 |
| Molecular Formula | C9H8O3S |
| Molecular Weight | 196.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 196.22 g/mol gives 7-Oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
7-Oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylic acid (CAS 96334-46-2) is a high-purity analytical reference standard with the molecular formula C9H8O3S and a molecular weight of 196.22 g/mol.
7-Oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylic acid (C9H8O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; 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.
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.
Physical & Chemical Properties
| Molecular Formula | C9H8O3S |
| Molecular Weight | 196.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Sulfur Atoms | 1 |
Related Oxo Standards
- 7-Oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxylic acid (CAS 1239955-68-0)
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