4,5,6,7-Tetrahydrobenzo[b]thiophene-2-carbonitrile CAS 57021-54-2
| CAS No. | 57021-54-2 |
| Molecular Formula | C9H9NS |
| Molecular Weight | 163.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4,5,6,7-Tetrahydrobenzo[b]thiophene-2-carbonitrile 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.
4,5,6,7-Tetrahydrobenzo[b]thiophene-2-carbonitrile (CAS 57021-54-2), molecular formula C9H9NS and molecular weight 163.24 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4,5,6,7-Tetrahydrobenzo[b]thiophene-2-carbonitrile (C9H9NS) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing 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).
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 | C9H9NS |
| Molecular Weight | 163.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | 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.) | 1973 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Tetrahydrobenzo Standards
- 4,5,6,7-Tetrahydrobenzo[b]thiophene-3-carbonitrile (CAS 95461-20-4)
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- 7-Methyl-1,2,3,5-tetrahydrobenzo[e][1,4]oxazepine (CAS 51585-35-4)
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- 1,2,3,4-tetrahydrobenzo(e)(1,4)diazepin-5-one (CAS 28544-83-4)
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Recommended Standards
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- 2-(Dimethylamino)cyclohexan-1-ol (CAS 30727-29-8)
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