Benzo[b]thiophene-3-thiol CAS 17402-89-0
| CAS No. | 17402-89-0 |
| Molecular Formula | C8H6S2 |
| Molecular Weight | 166.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to sulfur-containing functionality, an aromatic ring system, Benzo[b]thiophene-3-thiol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 166.26 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Benzo[b]thiophene-3-thiol (CAS 17402-89-0), molecular formula C8H6S2 and molecular weight 166.26 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C8H6S2 |
| Molecular Weight | 166.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | 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.) | 1961 |
| Sulfur Atoms | 2 |
Related Benzo Standards
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- Benzo[b]thiophene-2-thiol (CAS 30214-04-1)
- Benzo[b]thiophene-4-thiol (CAS 22069-06-3)
- Benzo[c][1,2,5]thiadiazol-4-ylmethanol (CAS 16406-00-1)
- (1H-Benzo[d]imidazol-2-yl)sulfanol (CAS 72255-31-3)
- Benzo[b]thiophene-5,6-diol (CAS 874507-80-9)
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Recommended Standards
- 2-Hexylidenecyclopentanone (CAS 17373-89-6)
- Dicyclopentylmethanone (CAS 17610-48-9)
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- Spiro[5.5]undecan-2-one (CAS 1781-81-3)
- 4-Amino-1-ethyl-N-(3-methoxyphenyl)-1h-pyrazole-5-carboxamide (CAS 1004451-79-9)
- 4-Chloro-2,6-Dimethylphenol (CAS 1123-63-3)
- 2-Bromo-N-[2-(3,4-dimethoxyphenyl)ethyl]butanamide (CAS 451460-08-5)
- tert-Butyl n-[cyano(phenyl)methyl]carbamate (CAS 78558-73-3)
- 3-(4-Formylphenyl)propanamide (CAS 1354782-99-2)
- 5-chloro-2,3-dihydrospiro[indene-1,3’-pyrrolidine]-2’,5’-dione (CAS 956141-90-5)
- 2-Fluoro-5-(methylcarbamoyl)benzeneboronic acid (CAS 874289-40-4)
- (2-Bromo-5-fluorobenzyl)(3-chloro-4-fluorophenyl)sulfane (CAS 1443341-04-5)
- 2,4-Dimethoxyphenol (CAS 13330-65-9)
- Peptide Impurity 81 TFA (CAS CATO-CPTD788581)
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