5-Chlorobenzo[b]thiophene-3-carbaldehyde CAS 16296-68-7
| CAS No. | 16296-68-7 |
| Molecular Formula | C9H5ClOS |
| Molecular Weight | 196.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Chlorobenzo[b]thiophene-3-carbaldehyde is closely related to sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 5-Chlorobenzo[b]thiophene-3-carbaldehyde (CAS 16296-68-7), a certified reference material (molecular formula C9H5ClOS, MW 196.65 g/mol) for analytical method development and quality control.
5-Chlorobenzo[b]thiophene-3-carbaldehyde (C9H5ClOS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C9H5ClOS |
| Molecular Weight | 196.65 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorobenzo Standards
- 3-Chlorobenzo[c]thiophene-1-carbaldehyde (CAS 136132-56-4)
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- 7-Chlorobenzo[b]thiophene-2-carbaldehyde (CAS 477735-67-4)
- 1-(5-Chlorobenzo[d]oxazol-2-yl)-N-methylmethanamine (CAS 1017782-51-2)
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Recommended Standards
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- {2-oxabicyclo[2.1.1]hexan-1-yl}methanesulfonyl chloride (CAS 2060006-04-2)
- 4-Oxocyclohexanesulfonyl Chloride (CAS 1262409-43-7)
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- 1,1-Diphenylhexan-2-ol (CAS 51799-47-4)
- cis-4-(4-Thiomethylbenzoyl)cyclohexane-1-carboxylic acid (CAS 1217852-97-5)
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