1,2-Bis(2,5-dimethylthiophen-3-yl)ethyne CAS 779332-92-2
| CAS No. | 779332-92-2 |
| Molecular Formula | C14H14S2 |
| Molecular Weight | 246.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,2-Bis(2,5-dimethylthiophen-3-yl)ethyne (CAS 779332-92-2), molecular formula C14H14S2 and molecular weight 246.39 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to sulfur-containing functionality, a polycyclic aromatic system, 1,2-Bis(2,5-dimethylthiophen-3-yl)ethyne is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 246.39 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 1,2-Bis(2,5-dimethylthiophen-3-yl)ethyne meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C14H14S2 |
| Molecular Weight | 246.39 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Sulfur Atoms | 2 |
Related Bis Standards
- 2-((3,5-Dimethylthiophen-2-yl)amino)benzoic acid (CAS 87895-89-4)
- 2-(2,5-dimethylthiophen-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 942070-20-4)
- 5-(4,5-Dimethylthiophen-3-yl)-4-isopropyl-4H-1,2,4-triazole-3-thiol (CAS 847503-20-2)
- 5-(4,5-Dimethylthiophen-3-yl)-4-propyl-4H-1,2,4-triazole-3-thiol (CAS 847503-19-9)
- 5-(4,5-Dimethylthiophen-3-yl)-4-ethyl-4H-1,2,4-triazole-3-thiol (CAS 438229-96-0)
- 7-(2,5-Dimethylthiophen-3-yl)pyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 860648-52-8)
- 2-(3,4-Dimethylthiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1384127-60-9)
- 2-(2,5-Dimethylthiophen-3-yl)-1H-indole-3-carbaldehyde (CAS 590390-92-4)
Recommended Standards
- 1-(6-(Tert-butyl)-1,1-dimethyl-2,3-dihydro-1H-inden-4-yl)ethan-1-ol (CAS 337484-84-1)
- 1,2-Bis(phenylthio)ethane (CAS 622-20-8)
- 1-(4-Nonylphenyl)ethan-1-one (CAS 37593-05-8)
- 1,2-Di-m-tolyldisulfane (CAS 20333-41-9)
- N-(2-Aminoethyl)benzenesulfonamidehydrochloride (CAS 53672-99-4)
- 5H-Benzo[b]pyrido[3,2-e][1,4]oxazine (CAS 261-82-5)
- (2S,3S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-5,5,5-trifluoro-3-methylpentanoic acid (CAS 1513850-89-9)
- C26 Ceramide (CAS 121459-09-4)
- 1-methyl-1,2,3,4-tetrahydroquinoline-4-carboxylic acid hydrochloride (CAS 1955520-02-1)
- 5-methyl-5H,6H,7H-pyrrolo[1,2-b][1,2,4]triazol-7-amine (CAS 1909348-18-0)
- 7-(3,5-Dimethyl-1H-pyrazol-1-yl)-2,4-bis(trifluoromethyl)-1,8-naphthyridine (CAS 321998-05-4)
- n-(2-Chlorobenzyl)piperidin-4-amine dihydrochloride (CAS 1233952-92-5)
- 4-Formyl-5,5-dimethylbicyclo[2.1.1]Hexane-1-carboxylic acid (CAS 1420789-89-4)
- Tau Peptide (301-315) trifluoroacetate salt (CAS 330456-48-9)
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