5-Methyl-2-phenylbenzo[b]thiophene CAS 55164-43-7
| CAS No. | 55164-43-7 |
| Molecular Formula | C15H12S |
| Molecular Weight | 224.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Methyl-2-phenylbenzo[b]thiophene (CAS 55164-43-7), molecular formula C15H12S and molecular weight 224.32 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to sulfur-containing functionality, a polycyclic aromatic system, 5-Methyl-2-phenylbenzo[b]thiophene is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 224.32 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).
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 | C15H12S |
| Molecular Weight | 224.32 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 4-Methyl-2-phenylbenzo[b]thiophene (CAS 162135-79-7)
- 6-Methyl-2-phenylbenzo[b]thiophene (CAS 27047-29-6)
- (2-Phenylbenzo[d]oxazol-6-yl)methanamine (CAS 1367920-70-4)
- (2-Phenylbenzo[d]oxazol-4-yl)methanamine (CAS 760111-76-0)
- (2-Phenylbenzo[d]oxazol-5-yl)methanamine (CAS 864264-01-7)
- 6-Methyl-3-phenylbenzo[d]oxazol-2(3H)-one (CAS 808114-07-0)
- 2-Phenylbenzo[cd]indol-5(1H)-one (CAS 75528-57-3)
- 2-Methyl-6-phenylbenzo[d]thiazole (CAS 107559-02-4)
Recommended Standards
- 5-Ethyl-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carbohydrazide (CAS 790263-70-6)
- 5-Propyl-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxylic acid (CAS 667436-13-7)
- 4h,5h,6h,7h,8h,9h-Cycloocta[b]thiophene-2-carbohydrazide (CAS 750599-06-5)
- 6-(Phenylthio)hexanoic acid (CAS 325698-86-0)
- 1-(1-(Benzyloxy)-3-phenylpropyl)-3-methoxybenzene (CAS 1402010-57-4)
- 2-Butoxy-4-methylaniline (CAS 640767-76-6)
- Ethyl 5-Amino-1,2,4-triazole-3-carboxylate (CAS 63666-11-5)
- 1-(2,5-Dimethylphenyl)butan-1-one 1138AE 35031-53-9 C12H16O (CAS 35031-53-9)
- 3-Aminopiperidine-3-carboxylic Acid (CAS 72519-17-6)
- 2,3,4,5-Tetrahydrobenzo[b][1,4]oxazepine (CAS 7160-97-6)
- 4-Chloro-2-(pyrrolidin-1-yl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine (CAS 1310384-39-4)
- 6-(2-(3-(3-Ethylbenzo[d]oxazol-3-ium-2-yl)allylidene)benzo[d]oxazol-3(2H)-yl)hexanoate (CAS 260430-02-2)
- 3-Methylimidazo[1,5-a]pyridine-1-carbaldehyde (CAS 610276-97-6)
- Semaglutide impurity 37 (CAS CATO-C4X-222637)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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