5-Chlorobenzo[b]thiophene CAS 20532-33-6
| CAS No. | 20532-33-6 |
| Molecular Formula | C8H5ClS |
| Molecular Weight | 168.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Chlorobenzo[b]thiophene (CAS 20532-33-6), a certified reference material (molecular formula C8H5ClS, MW 168.64 g/mol) for analytical method development and quality control.
Structurally, 5-Chlorobenzo[b]thiophene (C8H5ClS) contains sulfur-containing functionality, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 168.64 g/mol, it falls into the medium-molecular-weight range. 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 5-Chlorobenzo[b]thiophene 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 | C8H5ClS |
| Molecular Weight | 168.64 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorobenzo Standards
- 6-Chlorobenzo[b]thiophene (CAS 66490-20-8)
- 7-Chlorobenzo[b]thiophene (CAS 90407-14-0)
- 2-Chlorobenzo[d]oxazol-5-amine (CAS 1352912-46-9)
- 2-Chlorobenzo[d]oxazol-7-amine (CAS 1783568-90-0)
- 2-Chlorobenzo[d]oxazol-4-amine (CAS 1783568-99-9)
- 2-Chlorobenzo[d]oxazol-6-amine (CAS 1785621-85-3)
- 3-Chlorobenzo[d]isoxazol-5-amine (CAS 73498-29-0)
- 4-Chlorobenzo[d]isoxazol-3-amine (CAS 868271-15-2)
Recommended Standards
- 4-Pentene-1-sulfonyl Chloride (CAS 60154-77-0)
- 4-chloro-1λ⁶-thiane-1,1-dione (CAS 38690-85-6)
- 3-Chloro-1-benzothiophene (CAS 7342-86-1)
- Ethyl 2-chloro-2-(methylthio)acetate (CAS 56078-31-0)
- (1-(4-(Trifluoromethoxy)phenyl)ethyl)hydrazine (CAS 1016804-01-5)
- 4'-(tert-Butyl)acetanilide (CAS 20330-45-4)
- 2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-5-carbonitrile (CAS 1256359-11-1)
- Selexipag Impurity 21 (CAS CATO-C4X-196121)
- S-(1,2,2-Trichlorovinyl)-Cysteine (CAS 98025-31-1)
- 1-(3-Chloro-4-hydroxyphenyl)propan-2-one (CAS 84023-32-5)
- 5,6-Diethoxybenzo[b]thiophene-2-carboxylic acid (CAS 97852-72-7)
- 3-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-2-thioxo-1,3-thiazolidin-4-one (CAS 34931-00-5)
- 2-Ethyl-2-methyl-1,3-dioxolane (CAS 126-39-6)
- Fragment-[7-31]-Liraglutide (CAS CATO-C4X-199239)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com