| CAS: | 1081-34-1 |
| MF: | C12H8S3 |
| MW: | 248.39 |
| EINECS: | 640-441-1 |
| Product Categories: | pharmacetical;Thiophenes;Functional Materials;Highly Purified Reagents;Other Categories;Reagents for Conducting Polymer Research;Refined Products by Sublimation;Thiophene Derivatives (for Conduting Polymer Research);Thiophene Series |
| Mol File: | 1081-34-1.mol |
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| 2,2':5',2''-TERTHIOPHENE Chemical Properties |
| Melting point | 93-95 °C(lit.) |
| Boiling point | 160 °C (0.1 mmHg) |
| density | 1.4602 (rough estimate) |
| refractive index | 1.6200 (estimate) |
| Fp | 160°C/0.1mm |
| storage temp. | Keep in dark place,Sealed in dry,Room Temperature |
| solubility | Chloroform (Slightly), Methanol (Slightly) |
| form | Solid |
| color | Light Yellow |
| Water Solubility | Insoluble in water. |
| Merck | 14,9174 |
| BRN | 178604 |
| CAS DataBase Reference | 1081-34-1(CAS DataBase Reference) |
| EPA Substance Registry System | .alpha.-Terthiophene (1081-34-1) |
| 2,2':5',2''-TERTHIOPHENE Usage And Synthesis |
| Chemical Properties | YELLOW TO YELLOW-BROWN POWDER |
| Uses | α-Terthienyl was first recognized as a nematicidal constituent of marigolds, but in the presence of light, it is also highly toxic to larvae of several insect species, including mosquitoes. This electron donor thiophenederivative phototoxin is biosynthesized from polyacetylene precursors and appears to function as a photosensitizer catalyzing the formation of reactive oxygen species at the target site (25). |
| Uses | 2,2'':5'',2''''-Terthiophene is a thiophene compound isolated from the roots of Echinops transiliensis, and was studied for its larvicidal activity against Aedes aegypti. 2,2'':5'',2''''-Terthiophene also showed inhibitory effects on dispersal ability of Bursaphelenchus xylophilus when used synergistically with certain antibiotics. |
| Definition | ChEBI: 2,2':5',2''-terthiophene is a terthiophene. |
| Synthesis Reference(s) | Synthetic Communications, 19, p. 307, 1989 DOI: 10.1080/00397918908050983
Synthesis, p. 462, 1991 DOI: 10.1055/s-1991-26494 |
| General Description | 2,2′:5′,2′′-Terthiophene (TTh) may be prepared by nickel catalysed coupling reaction of grignard′s reagent derived from 2-bromothiophene and magnesium. It generates singlet oxygen. In nature, it is found in the floral extract of Tagetes minuta and Echinops grijisii. It is known to be toxic to mosquitoes. It also exihibits antifungal activity. |
| Metabolic pathway | When 14C-a-terthienyl is administered orally to rats in a single dose, two metabolites [1,4-di(2'-thienyl)]-1,4- butadione and 2-2' -bithiophene-5-carboxylic acid are identified in the urine. |
| Purification Methods | Possible impurities are bithienyl and polythienyls. Suspend it in H2O and steam distil it to remove bithienyl. The residue is cooled and extracted with CHCl3, dried (MgSO4), filtered, evaporated and the residue chromatographed on Al2O3 using pet ether/3% Me2CO as eluent. The terphenyl zone is then eluted from the Al2O3 with Et2O, the extract is evaporated and the residue is recrystallised from MeOH (40mL per g). The platelets are washed with cold MeOH and dried in air. [UV: Sease & Zechmeister J Am Chem Soc 69 270 1947; Uhlenbroek & Bijloo Recl Trav Chim Pays-Bas 79 1181 1960.] It has also been recrystallised from MeOH, *C6H6, pet ether or AcOH. [UV: Zechmeister & Sease J Am Chem Soc 69 273 1947, Steinkopf et al. Justus Liebigs Ann Chem 546 180 1941.] It is a phototoxic nematocide [Cooper & Nitsche Bioorg Chem 13 36 1985, Chan et al. Phytochem 14 2295 1975]. [Beilstein 19 III/IV 4763, 19/9 V 226.] |
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Packing:25kg/drum
Shipping:by sea or by air
Payment:T/T,western union,moneygram
Packaging Details drum
Port:Tianjin
Lead Time :
| Quantity(Kilograms) | 1 - 10000 | >10000 |
| Est. Time(days) | 5 | To be negotiated |
Company information
Hebei Mojin Biotechnology Co., Ltd, Our company is a professional in 4'-Methylacetophenone,Levamisole hydrochloride ,N-Methylformamide and other chemical reagents research and development production enterprises. Our business covers more than 30 countries, most of the big customers come from Europe, America and other countries in the world, we can guarantee the quality and price. In recent decades, with the efforts of all employees, we have established many cooperative companies in shandong, henan, guangdong and other places. Our corporate purpose is based on the market, enhance the strength, take the road of scientific and environmental sustainable development, relying on the country. Technology r & d center, increase the investment in r & d, based on the domestic market, expand the international market, manufacturing quality products, sincere service to the society, into a modern, ecological, scientific and technological enterprise world.
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