5-Bromo-7-chlorobenzo[b]thiophene-2-carbonitrile CAS 1936265-82-5
| CAS No. | 1936265-82-5 |
| Molecular Formula | C9H3BrClNS |
| Molecular Weight | 272.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-Bromo-7-chlorobenzo[b]thiophene-2-carbonitrile.
5-Bromo-7-chlorobenzo[b]thiophene-2-carbonitrile (CAS 1936265-82-5), molecular formula C9H3BrClNS and molecular weight 272.55 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H3BrClNS, 5-Bromo-7-chlorobenzo[b]thiophene-2-carbonitrile contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 272.55 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), 5-Bromo-7-chlorobenzo[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.
Physical & Chemical Properties
| Molecular Formula | C9H3BrClNS |
| Molecular Weight | 272.55 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- N-((4-((5-Bromopyrimidin-2-yl)oxy)-3-methylphenyl)carbamoyl)-2-(dimethylamino)benzamide (CAS 134742-19-1)
- Methyl 3-chloro-4-oxo-1,4-dihydroquinoline-6-carboxylate (CAS 1264209-58-6)
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- Ethyl 2-chloro-4-(1,3-dioxoisoindolin-2-yl)butanoate (CAS 50962-20-4)
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