3-Chlorobenzo[b]thiophene-2-carboxamide CAS 21211-09-6
| CAS No. | 21211-09-6 |
| Molecular Formula | C9H6ClNOS |
| Molecular Weight | 211.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 211.67 g/mol gives 3-Chlorobenzo[b]thiophene-2-carboxamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Chlorobenzo[b]thiophene-2-carboxamide (CAS 21211-09-6) is a high-purity analytical reference standard with the molecular formula C9H6ClNOS and a molecular weight of 211.67 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, 3-Chlorobenzo[b]thiophene-2-carboxamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 211.67 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 3-Chlorobenzo[b]thiophene-2-carboxamide 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 | C9H6ClNOS |
| Molecular Weight | 211.67 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.) | 1963 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chlorobenzo Standards
- (E)-3-chlorobenzo[b]thiophene-2-carbaldehyde oxime (CAS 14006-55-4)
- 1-(2-Chlorobenzo[d]thiazol-5-yl)ethanone (CAS 61700-71-8)
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- 1-(5-Chlorobenzo[d]thiazol-2-yl)ethanone (CAS 65840-54-2)
- 3-(7-Chlorobenzo[d][1,3]dioxol-5-yl)prop-2-en-1-amine (CAS 1344739-42-9)
- 5-Chlorobenzo[b]thiophene-3-ethanamine (CAS 274918-15-9)
- Methyl 2-chlorobenzo[d]oxazole-4-carboxylate (CAS 1007112-35-7)
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Recommended Standards
- 3-(4-chlorophenyl)-1,2,4-thiadiazol-5-amine (CAS 19922-07-7)
- 4-(2-Chlorophenyl)-2,3-dihydro-1,3-thiazol-2-one (CAS 43045-08-5)
- 3-(2-chlorophenyl)-1,2,4-thiadiazol-5-amine (CAS 19922-06-6)
- 4-(3-chlorophenyl)-4H-1,2,4-triazole-3-thiol (CAS 66297-55-0)
- 1-Benzylpyrrolidin-3-amine hydrochloride (CAS 368429-76-9)
- 11-Nitro-1-undecanol (CAS 81541-83-5)
- (S)-2-(((Benzyloxy)carbonyl)amino)-3-(4-methoxyphenyl)propanoic acid (CAS 17554-34-6)
- 2-(Pyridin-4-yl)-1H-benzo[d]imidazole-7-carboxylic acid (CAS 124340-93-8)
- 1-(3-Fluoropyridin-2-yl)pyrrolidin-3-amine (CAS 1342881-20-2)
- 1-Methyl-2-phenylindole-3-carboxaldehyde (CAS 1757-72-8)
- 2-Methyl-6-(thiophen-3-yl)pyrimidin-4-ol (CAS 1412957-89-1)
- 2-(2-Methylthiophen-3-yl)ethanol (CAS 89500-82-3)
- 7-Ethoxy-4-(2-(6-methylpyridin-2-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl)quinoline (CAS 737791-24-1)
- Neuropeptide Y (2-36), amide, porcine (CAS 102961-52-4)
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