7-Chlorobenzo[b]thiophene CAS 90407-14-0
| CAS No. | 90407-14-0 |
| Molecular Formula | C8H5ClS |
| Molecular Weight | 168.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 7-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.
CATO supplies 7-Chlorobenzo[b]thiophene (CAS 90407-14-0), a certified reference material (molecular formula C8H5ClS, MW 168.64 g/mol) for analytical method development and quality control.
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 | 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.) | 1982 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorobenzo Standards
- 5-Chlorobenzo[b]thiophene (CAS 20532-33-6)
- 6-Chlorobenzo[b]thiophene (CAS 66490-20-8)
- 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
- Ethyl 2-chloro-2-(methylthio)acetate (CAS 56078-31-0)
- 26394-17-2 Cyclopentanesulfonyl chloride cyclopentanesulphonyl chloride (CAS 26394-17-2)
- 4-Pentene-1-sulfonyl Chloride (CAS 60154-77-0)
- Brexpiprazole Impurity 18 (CAS 66490-33-3)
- Ethyl 5-Methylpyridine-2-acetate (CAS 5552-82-9)
- 4-(Pyrimidin-5-yl)thiophene-2-carbaldehyde (CAS 893741-28-1)
- 3,4-Dihydro-2H-pyrido[3,2-b][1,4]oxazine-7-carbonitrile (CAS 34945-66-9)
- 4-Chloro-6-fluoro-1-methylquinolin-2(1H)-one (CAS 1613289-30-7)
- (1R,2S)-2-methoxycyclohexan-1-amine (CAS 742042-55-3)
- 9,10-Bis(6-methoxy-2-naphthyl)anthracene (CAS 235099-48-6)
- 6-fluorophthalazine-1,4-diol (CAS 24036-99-5)
- Diflorasone Impurity 5 (CAS CATO-C4X-24805)
- 1-(4-chlorophenyl)-3-methyl-1H-pyrazole-4-carboxylic acid (CAS 288252-17-5)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
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