3-Chloro-4-fluorobenzo[b]thiophene-2-carbonyl chloride CAS 75998-36-6
| CAS No. | 75998-36-6 |
| Molecular Formula | C9H3Cl2FOS |
| Molecular Weight | 249.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-Chloro-4-fluorobenzo[b]thiophene-2-carbonyl chloride (CAS 75998-36-6), molecular formula C9H3Cl2FOS and molecular weight 249.09 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H3Cl2FOS, 3-Chloro-4-fluorobenzo[b]thiophene-2-carbonyl chloride contains sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 249.09 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.
CATO manufactures 3-Chloro-4-fluorobenzo[b]thiophene-2-carbonyl chloride 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 | C9H3Cl2FOS |
| Molecular Weight | 249.09 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.) | 1978 |
| Halogen Content | F/Cl-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 3-Chloro-2-ethoxy-9-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 88405-08-7)
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- n-Ethyl-N-methylsulfamoyl fluoride (CAS 1458771-72-6)
- 1-(Triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridine-5-carboxylic acid (CAS 1086423-47-3)
- 1-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-phenylcyclobutane-1-carboxylic acid (CAS 1984074-24-9)
- Neuropeptide Y (free acid) (human, rat) trifluoroacetate salt (CAS 99575-89-0)
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